Home / 87,548.40-131,171.40-40,705.20

Finding the Fourth Proportional to 87,548.40, 131,171.40 and 40,705.20

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Solution

The fourth proportional to 87,548.40, 131,171.40 and 40,705.20 is: 60,987.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,548.40 : 131,171.40 = 40,705.20 : x
  2. Step 2: Convert to fraction form
    87,548.40/131,171.40 = 40,705.20/x
  3. Step 3: Cross multiply
    87,548.40x = 131,171.40 × 40,705.20
  4. Step 4: Simplify right side
    87,548.40x = 5,339,358,071.28
  5. Step 5: Solve for x
    x = 5,339,358,071.28/87,548.40
  6. Step 6: Final answer
    x = 60,987.50

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1.5x scale

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.