Home / 85,713.19-128,578.24-29,545.90

Finding the Fourth Proportional to 85,713.19, 128,578.24 and 29,545.90

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Solution

The fourth proportional to 85,713.19, 128,578.24 and 29,545.90 is: 44,321.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,713.19 : 128,578.24 = 29,545.90 : x
  2. Step 2: Convert to fraction form
    85,713.19/128,578.24 = 29,545.90/x
  3. Step 3: Cross multiply
    85,713.19x = 128,578.24 × 29,545.90
  4. Step 4: Simplify right side
    85,713.19x = 3,798,960,142.66
  5. Step 5: Solve for x
    x = 3,798,960,142.66/85,713.19
  6. Step 6: Final answer
    x = 44,321.77

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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.