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Finding the Fourth Proportional to 83,951.40, 115,816.40 and 48,133.20

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Solution

The fourth proportional to 83,951.40, 115,816.40 and 48,133.20 is: 66,402.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,951.40 : 115,816.40 = 48,133.20 : x
  2. Step 2: Convert to fraction form
    83,951.40/115,816.40 = 48,133.20/x
  3. Step 3: Cross multiply
    83,951.40x = 115,816.40 × 48,133.20
  4. Step 4: Simplify right side
    83,951.40x = 5,574,613,944.48
  5. Step 5: Solve for x
    x = 5,574,613,944.48/83,951.40
  6. Step 6: Final answer
    x = 66,402.87

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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.