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Finding the Fourth Proportional to 72,279.57, 108,465.62 and 39,022.82

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Solution

The fourth proportional to 72,279.57, 108,465.62 and 39,022.82 is: 58,559.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,279.57 : 108,465.62 = 39,022.82 : x
  2. Step 2: Convert to fraction form
    72,279.57/108,465.62 = 39,022.82/x
  3. Step 3: Cross multiply
    72,279.57x = 108,465.62 × 39,022.82
  4. Step 4: Simplify right side
    72,279.57x = 4,232,634,365.45
  5. Step 5: Solve for x
    x = 4,232,634,365.45/72,279.57
  6. Step 6: Final answer
    x = 58,559.21

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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.