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Finding the Fourth Proportional to 85,035.42, 127,470.42 and 40,650.66

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Solution

The fourth proportional to 85,035.42, 127,470.42 and 40,650.66 is: 60,936.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,035.42 : 127,470.42 = 40,650.66 : x
  2. Step 2: Convert to fraction form
    85,035.42/127,470.42 = 40,650.66/x
  3. Step 3: Cross multiply
    85,035.42x = 127,470.42 × 40,650.66
  4. Step 4: Simplify right side
    85,035.42x = 5,181,756,703.48
  5. Step 5: Solve for x
    x = 5,181,756,703.48/85,035.42
  6. Step 6: Final answer
    x = 60,936.45

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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.