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Finding the Fourth Proportional to 91,468.80, 137,213.04 and 29,124.72

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Solution

The fourth proportional to 91,468.80, 137,213.04 and 29,124.72 is: 43,690.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,468.80 : 137,213.04 = 29,124.72 : x
  2. Step 2: Convert to fraction form
    91,468.80/137,213.04 = 29,124.72/x
  3. Step 3: Cross multiply
    91,468.80x = 137,213.04 × 29,124.72
  4. Step 4: Simplify right side
    91,468.80x = 3,996,291,370.35
  5. Step 5: Solve for x
    x = 3,996,291,370.35/91,468.80
  6. Step 6: Final answer
    x = 43,690.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.