Home / 86,202.28-129,312.42-23,872.78

Finding the Fourth Proportional to 86,202.28, 129,312.42 and 23,872.78

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Solution

The fourth proportional to 86,202.28, 129,312.42 and 23,872.78 is: 35,811.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,202.28 : 129,312.42 = 23,872.78 : x
  2. Step 2: Convert to fraction form
    86,202.28/129,312.42 = 23,872.78/x
  3. Step 3: Cross multiply
    86,202.28x = 129,312.42 × 23,872.78
  4. Step 4: Simplify right side
    86,202.28x = 3,087,046,953.93
  5. Step 5: Solve for x
    x = 3,087,046,953.93/86,202.28
  6. Step 6: Final answer
    x = 35,811.66

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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.