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Finding the Fourth Proportional to 81,570.92, 112,502.92 and 67,399.16

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Solution

The fourth proportional to 81,570.92, 112,502.92 and 67,399.16 is: 92,957.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,570.92 : 112,502.92 = 67,399.16 : x
  2. Step 2: Convert to fraction form
    81,570.92/112,502.92 = 67,399.16/x
  3. Step 3: Cross multiply
    81,570.92x = 112,502.92 × 67,399.16
  4. Step 4: Simplify right side
    81,570.92x = 7,582,602,305.55
  5. Step 5: Solve for x
    x = 7,582,602,305.55/81,570.92
  6. Step 6: Final answer
    x = 92,957.18

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1.5x scale

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.