Home / 87,897.74-121,290.18-49,128.30

Finding the Fourth Proportional to 87,897.74, 121,290.18 and 49,128.30

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Solution

The fourth proportional to 87,897.74, 121,290.18 and 49,128.30 is: 67,792.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,897.74 : 121,290.18 = 49,128.30 : x
  2. Step 2: Convert to fraction form
    87,897.74/121,290.18 = 49,128.30/x
  3. Step 3: Cross multiply
    87,897.74x = 121,290.18 × 49,128.30
  4. Step 4: Simplify right side
    87,897.74x = 5,958,780,350.09
  5. Step 5: Solve for x
    x = 5,958,780,350.09/87,897.74
  6. Step 6: Final answer
    x = 67,792.19

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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.