Home / 81,569.42-112,500.87-67,397.66

Finding the Fourth Proportional to 81,569.42, 112,500.87 and 67,397.66

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Solution

The fourth proportional to 81,569.42, 112,500.87 and 67,397.66 is: 92,955.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,569.42 : 112,500.87 = 67,397.66 : x
  2. Step 2: Convert to fraction form
    81,569.42/112,500.87 = 67,397.66/x
  3. Step 3: Cross multiply
    81,569.42x = 112,500.87 × 67,397.66
  4. Step 4: Simplify right side
    81,569.42x = 7,582,295,385.96
  5. Step 5: Solve for x
    x = 7,582,295,385.96/81,569.42
  6. Step 6: Final answer
    x = 92,955.12

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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.