Home / 77,431.20-106,864.62-47,225.76

Finding the Fourth Proportional to 77,431.20, 106,864.62 and 47,225.76

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Solution

The fourth proportional to 77,431.20, 106,864.62 and 47,225.76 is: 65,177.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,431.20 : 106,864.62 = 47,225.76 : x
  2. Step 2: Convert to fraction form
    77,431.20/106,864.62 = 47,225.76/x
  3. Step 3: Cross multiply
    77,431.20x = 106,864.62 × 47,225.76
  4. Step 4: Simplify right side
    77,431.20x = 5,046,762,896.61
  5. Step 5: Solve for x
    x = 5,046,762,896.61/77,431.20
  6. Step 6: Final answer
    x = 65,177.38

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Double scale
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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.