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Finding the Fourth Proportional to 81,366.96, 121,891.53 and 56,062.00

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Solution

The fourth proportional to 81,366.96, 121,891.53 and 56,062.00 is: 83,983.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,366.96 : 121,891.53 = 56,062.00 : x
  2. Step 2: Convert to fraction form
    81,366.96/121,891.53 = 56,062.00/x
  3. Step 3: Cross multiply
    81,366.96x = 121,891.53 × 56,062.00
  4. Step 4: Simplify right side
    81,366.96x = 6,833,482,974.64
  5. Step 5: Solve for x
    x = 6,833,482,974.64/81,366.96
  6. Step 6: Final answer
    x = 83,983.52

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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.