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Finding the Fourth Proportional to 81,502.33, 112,478.62 and 45,694.66

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Solution

The fourth proportional to 81,502.33, 112,478.62 and 45,694.66 is: 63,061.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,502.33 : 112,478.62 = 45,694.66 : x
  2. Step 2: Convert to fraction form
    81,502.33/112,478.62 = 45,694.66/x
  3. Step 3: Cross multiply
    81,502.33x = 112,478.62 × 45,694.66
  4. Step 4: Simplify right side
    81,502.33x = 5,139,672,298.17
  5. Step 5: Solve for x
    x = 5,139,672,298.17/81,502.33
  6. Step 6: Final answer
    x = 63,061.66

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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.