Home / 87,781.76-131,672.64-48,318.56

Finding the Fourth Proportional to 87,781.76, 131,672.64 and 48,318.56

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Solution

The fourth proportional to 87,781.76, 131,672.64 and 48,318.56 is: 72,477.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,781.76 : 131,672.64 = 48,318.56 : x
  2. Step 2: Convert to fraction form
    87,781.76/131,672.64 = 48,318.56/x
  3. Step 3: Cross multiply
    87,781.76x = 131,672.64 × 48,318.56
  4. Step 4: Simplify right side
    87,781.76x = 6,362,232,356.20
  5. Step 5: Solve for x
    x = 6,362,232,356.20/87,781.76
  6. Step 6: Final answer
    x = 72,477.84

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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.