Home / 85,148.20-127,722.30-40,752.10

Finding the Fourth Proportional to 85,148.20, 127,722.30 and 40,752.10

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Solution

The fourth proportional to 85,148.20, 127,722.30 and 40,752.10 is: 61,128.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,148.20 : 127,722.30 = 40,752.10 : x
  2. Step 2: Convert to fraction form
    85,148.20/127,722.30 = 40,752.10/x
  3. Step 3: Cross multiply
    85,148.20x = 127,722.30 × 40,752.10
  4. Step 4: Simplify right side
    85,148.20x = 5,204,951,941.83
  5. Step 5: Solve for x
    x = 5,204,951,941.83/85,148.20
  6. Step 6: Final answer
    x = 61,128.15

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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.