Home / 87,507.86-131,289.02-31,348.45

Finding the Fourth Proportional to 87,507.86, 131,289.02 and 31,348.45

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Solution

The fourth proportional to 87,507.86, 131,289.02 and 31,348.45 is: 47,032.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,507.86 : 131,289.02 = 31,348.45 : x
  2. Step 2: Convert to fraction form
    87,507.86/131,289.02 = 31,348.45/x
  3. Step 3: Cross multiply
    87,507.86x = 131,289.02 × 31,348.45
  4. Step 4: Simplify right side
    87,507.86x = 4,115,707,279.02
  5. Step 5: Solve for x
    x = 4,115,707,279.02/87,507.86
  6. Step 6: Final answer
    x = 47,032.43

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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.