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Finding the Fourth Proportional to 84,710.77, 126,905.77 and 56,545.90

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Solution

The fourth proportional to 84,710.77, 126,905.77 and 56,545.90 is: 84,711.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,710.77 : 126,905.77 = 56,545.90 : x
  2. Step 2: Convert to fraction form
    84,710.77/126,905.77 = 56,545.90/x
  3. Step 3: Cross multiply
    84,710.77x = 126,905.77 × 56,545.90
  4. Step 4: Simplify right side
    84,710.77x = 7,176,000,979.84
  5. Step 5: Solve for x
    x = 7,176,000,979.84/84,710.77
  6. Step 6: Final answer
    x = 84,711.79

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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.