Home / 85,153.60-127,631.85-40,203.46

Finding the Fourth Proportional to 85,153.60, 127,631.85 and 40,203.46

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Solution

The fourth proportional to 85,153.60, 127,631.85 and 40,203.46 is: 60,258.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,153.60 : 127,631.85 = 40,203.46 : x
  2. Step 2: Convert to fraction form
    85,153.60/127,631.85 = 40,203.46/x
  3. Step 3: Cross multiply
    85,153.60x = 127,631.85 × 40,203.46
  4. Step 4: Simplify right side
    85,153.60x = 5,131,241,976.20
  5. Step 5: Solve for x
    x = 5,131,241,976.20/85,153.60
  6. Step 6: Final answer
    x = 60,258.66

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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.