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Finding the Fourth Proportional to 71,881.28, 99,193.88 and 45,038.29

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Solution

The fourth proportional to 71,881.28, 99,193.88 and 45,038.29 is: 62,151.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,881.28 : 99,193.88 = 45,038.29 : x
  2. Step 2: Convert to fraction form
    71,881.28/99,193.88 = 45,038.29/x
  3. Step 3: Cross multiply
    71,881.28x = 99,193.88 × 45,038.29
  4. Step 4: Simplify right side
    71,881.28x = 4,467,522,237.70
  5. Step 5: Solve for x
    x = 4,467,522,237.70/71,881.28
  6. Step 6: Final answer
    x = 62,151.40

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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.