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Finding the Fourth Proportional to 86,902.38, 119,925.28 and 47,158.38

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Solution

The fourth proportional to 86,902.38, 119,925.28 and 47,158.38 is: 65,078.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,902.38 : 119,925.28 = 47,158.38 : x
  2. Step 2: Convert to fraction form
    86,902.38/119,925.28 = 47,158.38/x
  3. Step 3: Cross multiply
    86,902.38x = 119,925.28 × 47,158.38
  4. Step 4: Simplify right side
    86,902.38x = 5,655,481,925.85
  5. Step 5: Solve for x
    x = 5,655,481,925.85/86,902.38
  6. Step 6: Final answer
    x = 65,078.56

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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.