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Finding the Fourth Proportional to 71,006.63, 97,989.47 and 39,176.47

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Solution

The fourth proportional to 71,006.63, 97,989.47 and 39,176.47 is: 54,063.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,006.63 : 97,989.47 = 39,176.47 : x
  2. Step 2: Convert to fraction form
    71,006.63/97,989.47 = 39,176.47/x
  3. Step 3: Cross multiply
    71,006.63x = 97,989.47 × 39,176.47
  4. Step 4: Simplify right side
    71,006.63x = 3,838,881,384.74
  5. Step 5: Solve for x
    x = 3,838,881,384.74/71,006.63
  6. Step 6: Final answer
    x = 54,063.70

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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.