Home / 87,017.30-130,331.55-71,465.30

Finding the Fourth Proportional to 87,017.30, 130,331.55 and 71,465.30

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Solution

The fourth proportional to 87,017.30, 130,331.55 and 71,465.30 is: 107,038.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,017.30 : 130,331.55 = 71,465.30 : x
  2. Step 2: Convert to fraction form
    87,017.30/130,331.55 = 71,465.30/x
  3. Step 3: Cross multiply
    87,017.30x = 130,331.55 × 71,465.30
  4. Step 4: Simplify right side
    87,017.30x = 9,314,183,320.22
  5. Step 5: Solve for x
    x = 9,314,183,320.22/87,017.30
  6. Step 6: Final answer
    x = 107,038.29

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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.