Home / 85,987.32-129,030.80-36,062.97

Finding the Fourth Proportional to 85,987.32, 129,030.80 and 36,062.97

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Solution

The fourth proportional to 85,987.32, 129,030.80 and 36,062.97 is: 54,115.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,987.32 : 129,030.80 = 36,062.97 : x
  2. Step 2: Convert to fraction form
    85,987.32/129,030.80 = 36,062.97/x
  3. Step 3: Cross multiply
    85,987.32x = 129,030.80 × 36,062.97
  4. Step 4: Simplify right side
    85,987.32x = 4,653,233,689.16
  5. Step 5: Solve for x
    x = 4,653,233,689.16/85,987.32
  6. Step 6: Final answer
    x = 54,115.35

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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.