Home / 80,285.55-119,940-51,974.97

Finding the Fourth Proportional to 80,285.55, 119,940 and 51,974.97

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Solution

The fourth proportional to 80,285.55, 119,940 and 51,974.97 is: 77,646.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,285.55 : 119,940 = 51,974.97 : x
  2. Step 2: Convert to fraction form
    80,285.55/119,940 = 51,974.97/x
  3. Step 3: Cross multiply
    80,285.55x = 119,940 × 51,974.97
  4. Step 4: Simplify right side
    80,285.55x = 6,233,877,901.80
  5. Step 5: Solve for x
    x = 6,233,877,901.80/80,285.55
  6. Step 6: Final answer
    x = 77,646.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.