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Finding the Fourth Proportional to 81,070.66, 111,872.81 and 45,262.92

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Solution

The fourth proportional to 81,070.66, 111,872.81 and 45,262.92 is: 62,460.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,070.66 : 111,872.81 = 45,262.92 : x
  2. Step 2: Convert to fraction form
    81,070.66/111,872.81 = 45,262.92/x
  3. Step 3: Cross multiply
    81,070.66x = 111,872.81 × 45,262.92
  4. Step 4: Simplify right side
    81,070.66x = 5,063,690,049.21
  5. Step 5: Solve for x
    x = 5,063,690,049.21/81,070.66
  6. Step 6: Final answer
    x = 62,460.21

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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.