Home / 86,402.88-129,422.40-39,695.04

Finding the Fourth Proportional to 86,402.88, 129,422.40 and 39,695.04

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Solution

The fourth proportional to 86,402.88, 129,422.40 and 39,695.04 is: 59,458.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,402.88 : 129,422.40 = 39,695.04 : x
  2. Step 2: Convert to fraction form
    86,402.88/129,422.40 = 39,695.04/x
  3. Step 3: Cross multiply
    86,402.88x = 129,422.40 × 39,695.04
  4. Step 4: Simplify right side
    86,402.88x = 5,137,427,344.90
  5. Step 5: Solve for x
    x = 5,137,427,344.90/86,402.88
  6. Step 6: Final answer
    x = 59,458.98

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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.