Home / 88,141.17-121,636.25-49,899.72

Finding the Fourth Proportional to 88,141.17, 121,636.25 and 49,899.72

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Solution

The fourth proportional to 88,141.17, 121,636.25 and 49,899.72 is: 68,862.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,141.17 : 121,636.25 = 49,899.72 : x
  2. Step 2: Convert to fraction form
    88,141.17/121,636.25 = 49,899.72/x
  3. Step 3: Cross multiply
    88,141.17x = 121,636.25 × 49,899.72
  4. Step 4: Simplify right side
    88,141.17x = 6,069,614,816.85
  5. Step 5: Solve for x
    x = 6,069,614,816.85/88,141.17
  6. Step 6: Final answer
    x = 68,862.43

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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.