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Finding the Fourth Proportional to 71,526.38, 98,708.63 and 39,698.24

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Solution

The fourth proportional to 71,526.38, 98,708.63 and 39,698.24 is: 54,784.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,526.38 : 98,708.63 = 39,698.24 : x
  2. Step 2: Convert to fraction form
    71,526.38/98,708.63 = 39,698.24/x
  3. Step 3: Cross multiply
    71,526.38x = 98,708.63 × 39,698.24
  4. Step 4: Simplify right side
    71,526.38x = 3,918,558,191.78
  5. Step 5: Solve for x
    x = 3,918,558,191.78/71,526.38
  6. Step 6: Final answer
    x = 54,784.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.