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Finding the Fourth Proportional to 81,956.59, 123,048.12 and 56,596.61

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Solution

The fourth proportional to 81,956.59, 123,048.12 and 56,596.61 is: 84,973.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,956.59 : 123,048.12 = 56,596.61 : x
  2. Step 2: Convert to fraction form
    81,956.59/123,048.12 = 56,596.61/x
  3. Step 3: Cross multiply
    81,956.59x = 123,048.12 × 56,596.61
  4. Step 4: Simplify right side
    81,956.59x = 6,964,106,458.87
  5. Step 5: Solve for x
    x = 6,964,106,458.87/81,956.59
  6. Step 6: Final answer
    x = 84,973.11

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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.