Home / 86,302.80-129,444.12-23,128.38

Finding the Fourth Proportional to 86,302.80, 129,444.12 and 23,128.38

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Solution

The fourth proportional to 86,302.80, 129,444.12 and 23,128.38 is: 34,689.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,302.80 : 129,444.12 = 23,128.38 : x
  2. Step 2: Convert to fraction form
    86,302.80/129,444.12 = 23,128.38/x
  3. Step 3: Cross multiply
    86,302.80x = 129,444.12 × 23,128.38
  4. Step 4: Simplify right side
    86,302.80x = 2,993,832,796.13
  5. Step 5: Solve for x
    x = 2,993,832,796.13/86,302.80
  6. Step 6: Final answer
    x = 34,689.87

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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.