Home / 86,902.62-130,572.30-55,326.78

Finding the Fourth Proportional to 86,902.62, 130,572.30 and 55,326.78

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Solution

The fourth proportional to 86,902.62, 130,572.30 and 55,326.78 is: 83,129.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,902.62 : 130,572.30 = 55,326.78 : x
  2. Step 2: Convert to fraction form
    86,902.62/130,572.30 = 55,326.78/x
  3. Step 3: Cross multiply
    86,902.62x = 130,572.30 × 55,326.78
  4. Step 4: Simplify right side
    86,902.62x = 7,224,145,123.67
  5. Step 5: Solve for x
    x = 7,224,145,123.67/86,902.62
  6. Step 6: Final answer
    x = 83,129.20

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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.