Home / 87,343.86-120,538.81-49,115.45

Finding the Fourth Proportional to 87,343.86, 120,538.81 and 49,115.45

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Solution

The fourth proportional to 87,343.86, 120,538.81 and 49,115.45 is: 67,781.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,343.86 : 120,538.81 = 49,115.45 : x
  2. Step 2: Convert to fraction form
    87,343.86/120,538.81 = 49,115.45/x
  3. Step 3: Cross multiply
    87,343.86x = 120,538.81 × 49,115.45
  4. Step 4: Simplify right side
    87,343.86x = 5,920,317,396.14
  5. Step 5: Solve for x
    x = 5,920,317,396.14/87,343.86
  6. Step 6: Final answer
    x = 67,781.72

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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.