Home / 85,288.40-127,932.60-29,877.20

Finding the Fourth Proportional to 85,288.40, 127,932.60 and 29,877.20

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Solution

The fourth proportional to 85,288.40, 127,932.60 and 29,877.20 is: 44,815.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,288.40 : 127,932.60 = 29,877.20 : x
  2. Step 2: Convert to fraction form
    85,288.40/127,932.60 = 29,877.20/x
  3. Step 3: Cross multiply
    85,288.40x = 127,932.60 × 29,877.20
  4. Step 4: Simplify right side
    85,288.40x = 3,822,267,876.72
  5. Step 5: Solve for x
    x = 3,822,267,876.72/85,288.40
  6. Step 6: Final answer
    x = 44,815.80

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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.