Home / 84,815.40-127,223.10-54,877.80

Finding the Fourth Proportional to 84,815.40, 127,223.10 and 54,877.80

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Solution

The fourth proportional to 84,815.40, 127,223.10 and 54,877.80 is: 82,316.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,815.40 : 127,223.10 = 54,877.80 : x
  2. Step 2: Convert to fraction form
    84,815.40/127,223.10 = 54,877.80/x
  3. Step 3: Cross multiply
    84,815.40x = 127,223.10 × 54,877.80
  4. Step 4: Simplify right side
    84,815.40x = 6,981,723,837.18
  5. Step 5: Solve for x
    x = 6,981,723,837.18/84,815.40
  6. Step 6: Final answer
    x = 82,316.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.