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Finding the Fourth Proportional to 72,391.74, 108,587.64 and 19,797.24

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Solution

The fourth proportional to 72,391.74, 108,587.64 and 19,797.24 is: 29,695.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,391.74 : 108,587.64 = 19,797.24 : x
  2. Step 2: Convert to fraction form
    72,391.74/108,587.64 = 19,797.24/x
  3. Step 3: Cross multiply
    72,391.74x = 108,587.64 × 19,797.24
  4. Step 4: Simplify right side
    72,391.74x = 2,149,735,570.11
  5. Step 5: Solve for x
    x = 2,149,735,570.11/72,391.74
  6. Step 6: Final answer
    x = 29,695.87

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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.