Home / 66,761.88-92,141.69-38,081.60

Finding the Fourth Proportional to 66,761.88, 92,141.69 and 38,081.60

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Solution

The fourth proportional to 66,761.88, 92,141.69 and 38,081.60 is: 52,558.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,761.88 : 92,141.69 = 38,081.60 : x
  2. Step 2: Convert to fraction form
    66,761.88/92,141.69 = 38,081.60/x
  3. Step 3: Cross multiply
    66,761.88x = 92,141.69 × 38,081.60
  4. Step 4: Simplify right side
    66,761.88x = 3,508,902,981.90
  5. Step 5: Solve for x
    x = 3,508,902,981.90/66,761.88
  6. Step 6: Final answer
    x = 52,558.48

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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.