Home / 87,069.70-120,147.78-48,830.81

Finding the Fourth Proportional to 87,069.70, 120,147.78 and 48,830.81

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Solution

The fourth proportional to 87,069.70, 120,147.78 and 48,830.81 is: 67,381.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,069.70 : 120,147.78 = 48,830.81 : x
  2. Step 2: Convert to fraction form
    87,069.70/120,147.78 = 48,830.81/x
  3. Step 3: Cross multiply
    87,069.70x = 120,147.78 × 48,830.81
  4. Step 4: Simplify right side
    87,069.70x = 5,866,913,717.47
  5. Step 5: Solve for x
    x = 5,866,913,717.47/87,069.70
  6. Step 6: Final answer
    x = 67,381.81

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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.