Home / 88,438.80-132,480.18-40,987.20

Finding the Fourth Proportional to 88,438.80, 132,480.18 and 40,987.20

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Solution

The fourth proportional to 88,438.80, 132,480.18 and 40,987.20 is: 61,398.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,438.80 : 132,480.18 = 40,987.20 : x
  2. Step 2: Convert to fraction form
    88,438.80/132,480.18 = 40,987.20/x
  3. Step 3: Cross multiply
    88,438.80x = 132,480.18 × 40,987.20
  4. Step 4: Simplify right side
    88,438.80x = 5,429,991,633.70
  5. Step 5: Solve for x
    x = 5,429,991,633.70/88,438.80
  6. Step 6: Final answer
    x = 61,398.30

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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.