Home / 83,439.18-115,146.63-45,714.78

Finding the Fourth Proportional to 83,439.18, 115,146.63 and 45,714.78

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Solution

The fourth proportional to 83,439.18, 115,146.63 and 45,714.78 is: 63,086.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,439.18 : 115,146.63 = 45,714.78 : x
  2. Step 2: Convert to fraction form
    83,439.18/115,146.63 = 45,714.78/x
  3. Step 3: Cross multiply
    83,439.18x = 115,146.63 × 45,714.78
  4. Step 4: Simplify right side
    83,439.18x = 5,263,902,858.19
  5. Step 5: Solve for x
    x = 5,263,902,858.19/83,439.18
  6. Step 6: Final answer
    x = 63,086.70

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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.