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Finding the Fourth Proportional to 72,392.74, 108,589.14 and 19,798.24

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Solution

The fourth proportional to 72,392.74, 108,589.14 and 19,798.24 is: 29,697.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,392.74 : 108,589.14 = 19,798.24 : x
  2. Step 2: Convert to fraction form
    72,392.74/108,589.14 = 19,798.24/x
  3. Step 3: Cross multiply
    72,392.74x = 108,589.14 × 19,798.24
  4. Step 4: Simplify right side
    72,392.74x = 2,149,873,855.11
  5. Step 5: Solve for x
    x = 2,149,873,855.11/72,392.74
  6. Step 6: Final answer
    x = 29,697.37

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.