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Finding the Fourth Proportional to 71,365.87, 98,480.64 and 39,532.47

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Solution

The fourth proportional to 71,365.87, 98,480.64 and 39,532.47 is: 54,552.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,365.87 : 98,480.64 = 39,532.47 : x
  2. Step 2: Convert to fraction form
    71,365.87/98,480.64 = 39,532.47/x
  3. Step 3: Cross multiply
    71,365.87x = 98,480.64 × 39,532.47
  4. Step 4: Simplify right side
    71,365.87x = 3,893,182,946.38
  5. Step 5: Solve for x
    x = 3,893,182,946.38/71,365.87
  6. Step 6: Final answer
    x = 54,552.45

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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.