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Finding the Fourth Proportional to 71,154.72, 98,192.72 and 38,888.98

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Solution

The fourth proportional to 71,154.72, 98,192.72 and 38,888.98 is: 53,666.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,154.72 : 98,192.72 = 38,888.98 : x
  2. Step 2: Convert to fraction form
    71,154.72/98,192.72 = 38,888.98/x
  3. Step 3: Cross multiply
    71,154.72x = 98,192.72 × 38,888.98
  4. Step 4: Simplify right side
    71,154.72x = 3,818,614,575.97
  5. Step 5: Solve for x
    x = 3,818,614,575.97/71,154.72
  6. Step 6: Final answer
    x = 53,666.36

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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.