Home / 85,108.28-117,449.40-47,381.72

Finding the Fourth Proportional to 85,108.28, 117,449.40 and 47,381.72

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Solution

The fourth proportional to 85,108.28, 117,449.40 and 47,381.72 is: 65,386.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,108.28 : 117,449.40 = 47,381.72 : x
  2. Step 2: Convert to fraction form
    85,108.28/117,449.40 = 47,381.72/x
  3. Step 3: Cross multiply
    85,108.28x = 117,449.40 × 47,381.72
  4. Step 4: Simplify right side
    85,108.28x = 5,564,954,584.97
  5. Step 5: Solve for x
    x = 5,564,954,584.97/85,108.28
  6. Step 6: Final answer
    x = 65,386.76

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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.