Home / 87,830.25-131,730.36-31,659.18

Finding the Fourth Proportional to 87,830.25, 131,730.36 and 31,659.18

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Solution

The fourth proportional to 87,830.25, 131,730.36 and 31,659.18 is: 47,483.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,830.25 : 131,730.36 = 31,659.18 : x
  2. Step 2: Convert to fraction form
    87,830.25/131,730.36 = 31,659.18/x
  3. Step 3: Cross multiply
    87,830.25x = 131,730.36 × 31,659.18
  4. Step 4: Simplify right side
    87,830.25x = 4,170,475,178.70
  5. Step 5: Solve for x
    x = 4,170,475,178.70/87,830.25
  6. Step 6: Final answer
    x = 47,483.36

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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.