Home / 85,211.47-117,592.29-49,422.70

Finding the Fourth Proportional to 85,211.47, 117,592.29 and 49,422.70

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Solution

The fourth proportional to 85,211.47, 117,592.29 and 49,422.70 is: 68,203.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,211.47 : 117,592.29 = 49,422.70 : x
  2. Step 2: Convert to fraction form
    85,211.47/117,592.29 = 49,422.70/x
  3. Step 3: Cross multiply
    85,211.47x = 117,592.29 × 49,422.70
  4. Step 4: Simplify right side
    85,211.47x = 5,811,728,470.98
  5. Step 5: Solve for x
    x = 5,811,728,470.98/85,211.47
  6. Step 6: Final answer
    x = 68,203.59

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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.