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Finding the Fourth Proportional to 71,207.79, 98,267.40 and 39,377.22

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Solution

The fourth proportional to 71,207.79, 98,267.40 and 39,377.22 is: 54,340.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,207.79 : 98,267.40 = 39,377.22 : x
  2. Step 2: Convert to fraction form
    71,207.79/98,267.40 = 39,377.22/x
  3. Step 3: Cross multiply
    71,207.79x = 98,267.40 × 39,377.22
  4. Step 4: Simplify right side
    71,207.79x = 3,869,497,028.63
  5. Step 5: Solve for x
    x = 3,869,497,028.63/71,207.79
  6. Step 6: Final answer
    x = 54,340.92

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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.