Home / 87,949.70-131,938.56-31,784.12

Finding the Fourth Proportional to 87,949.70, 131,938.56 and 31,784.12

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Solution

The fourth proportional to 87,949.70, 131,938.56 and 31,784.12 is: 47,681.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,949.70 : 131,938.56 = 31,784.12 : x
  2. Step 2: Convert to fraction form
    87,949.70/131,938.56 = 31,784.12/x
  3. Step 3: Cross multiply
    87,949.70x = 131,938.56 × 31,784.12
  4. Step 4: Simplify right side
    87,949.70x = 4,193,551,023.67
  5. Step 5: Solve for x
    x = 4,193,551,023.67/87,949.70
  6. Step 6: Final answer
    x = 47,681.24

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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.