Home / 87,874.68-131,784.75-31,707.50

Finding the Fourth Proportional to 87,874.68, 131,784.75 and 31,707.50

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Solution

The fourth proportional to 87,874.68, 131,784.75 and 31,707.50 is: 47,551.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,874.68 : 131,784.75 = 31,707.50 : x
  2. Step 2: Convert to fraction form
    87,874.68/131,784.75 = 31,707.50/x
  3. Step 3: Cross multiply
    87,874.68x = 131,784.75 × 31,707.50
  4. Step 4: Simplify right side
    87,874.68x = 4,178,564,301.70
  5. Step 5: Solve for x
    x = 4,178,564,301.70/87,874.68
  6. Step 6: Final answer
    x = 47,551.40

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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.