Home / 87,678.88-121,008.71-49,446.29

Finding the Fourth Proportional to 87,678.88, 121,008.71 and 49,446.29

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Solution

The fourth proportional to 87,678.88, 121,008.71 and 49,446.29 is: 68,242.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,678.88 : 121,008.71 = 49,446.29 : x
  2. Step 2: Convert to fraction form
    87,678.88/121,008.71 = 49,446.29/x
  3. Step 3: Cross multiply
    87,678.88x = 121,008.71 × 49,446.29
  4. Step 4: Simplify right side
    87,678.88x = 5,983,431,767.19
  5. Step 5: Solve for x
    x = 5,983,431,767.19/87,678.88
  6. Step 6: Final answer
    x = 68,242.57

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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.