Home / 78,144.18-107,832.55-44,155.61

Finding the Fourth Proportional to 78,144.18, 107,832.55 and 44,155.61

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Solution

The fourth proportional to 78,144.18, 107,832.55 and 44,155.61 is: 60,931.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,144.18 : 107,832.55 = 44,155.61 : x
  2. Step 2: Convert to fraction form
    78,144.18/107,832.55 = 44,155.61/x
  3. Step 3: Cross multiply
    78,144.18x = 107,832.55 × 44,155.61
  4. Step 4: Simplify right side
    78,144.18x = 4,761,412,023.11
  5. Step 5: Solve for x
    x = 4,761,412,023.11/78,144.18
  6. Step 6: Final answer
    x = 60,931.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.