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Finding the Fourth Proportional to 61,497.20, 92,116.20 and 51,129.20

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Solution

The fourth proportional to 61,497.20, 92,116.20 and 51,129.20 is: 76,586.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,497.20 : 92,116.20 = 51,129.20 : x
  2. Step 2: Convert to fraction form
    61,497.20/92,116.20 = 51,129.20/x
  3. Step 3: Cross multiply
    61,497.20x = 92,116.20 × 51,129.20
  4. Step 4: Simplify right side
    61,497.20x = 4,709,827,613.04
  5. Step 5: Solve for x
    x = 4,709,827,613.04/61,497.20
  6. Step 6: Final answer
    x = 76,586.05

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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.