Home / 87,113.40-120,213.09-49,386.84

Finding the Fourth Proportional to 87,113.40, 120,213.09 and 49,386.84

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Solution

The fourth proportional to 87,113.40, 120,213.09 and 49,386.84 is: 68,151.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,113.40 : 120,213.09 = 49,386.84 : x
  2. Step 2: Convert to fraction form
    87,113.40/120,213.09 = 49,386.84/x
  3. Step 3: Cross multiply
    87,113.40x = 120,213.09 × 49,386.84
  4. Step 4: Simplify right side
    87,113.40x = 5,936,944,641.74
  5. Step 5: Solve for x
    x = 5,936,944,641.74/87,113.40
  6. Step 6: Final answer
    x = 68,151.91

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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.