Home / 85,345.20-127,914.12-60,392.54

Finding the Fourth Proportional to 85,345.20, 127,914.12 and 60,392.54

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Solution

The fourth proportional to 85,345.20, 127,914.12 and 60,392.54 is: 90,515.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,345.20 : 127,914.12 = 60,392.54 : x
  2. Step 2: Convert to fraction form
    85,345.20/127,914.12 = 60,392.54/x
  3. Step 3: Cross multiply
    85,345.20x = 127,914.12 × 60,392.54
  4. Step 4: Simplify right side
    85,345.20x = 7,725,058,608.66
  5. Step 5: Solve for x
    x = 7,725,058,608.66/85,345.20
  6. Step 6: Final answer
    x = 90,515.44

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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.