Home / 83,427.66-115,146.18-65,242.35

Finding the Fourth Proportional to 83,427.66, 115,146.18 and 65,242.35

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Solution

The fourth proportional to 83,427.66, 115,146.18 and 65,242.35 is: 90,046.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,427.66 : 115,146.18 = 65,242.35 : x
  2. Step 2: Convert to fraction form
    83,427.66/115,146.18 = 65,242.35/x
  3. Step 3: Cross multiply
    83,427.66x = 115,146.18 × 65,242.35
  4. Step 4: Simplify right side
    83,427.66x = 7,512,407,376.72
  5. Step 5: Solve for x
    x = 7,512,407,376.72/83,427.66
  6. Step 6: Final answer
    x = 90,046.96

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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.