Home / 87,071.09-120,159.45-48,839.12

Finding the Fourth Proportional to 87,071.09, 120,159.45 and 48,839.12

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Solution

The fourth proportional to 87,071.09, 120,159.45 and 48,839.12 is: 67,398.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,071.09 : 120,159.45 = 48,839.12 : x
  2. Step 2: Convert to fraction form
    87,071.09/120,159.45 = 48,839.12/x
  3. Step 3: Cross multiply
    87,071.09x = 120,159.45 × 48,839.12
  4. Step 4: Simplify right side
    87,071.09x = 5,868,481,647.48
  5. Step 5: Solve for x
    x = 5,868,481,647.48/87,071.09
  6. Step 6: Final answer
    x = 67,398.74

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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.