Home / 87,774.28-121,128.44-49,541.87

Finding the Fourth Proportional to 87,774.28, 121,128.44 and 49,541.87

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Solution

The fourth proportional to 87,774.28, 121,128.44 and 49,541.87 is: 68,367.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,774.28 : 121,128.44 = 49,541.87 : x
  2. Step 2: Convert to fraction form
    87,774.28/121,128.44 = 49,541.87/x
  3. Step 3: Cross multiply
    87,774.28x = 121,128.44 × 49,541.87
  4. Step 4: Simplify right side
    87,774.28x = 6,000,929,482.89
  5. Step 5: Solve for x
    x = 6,000,929,482.89/87,774.28
  6. Step 6: Final answer
    x = 68,367.75

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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.