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Finding the Fourth Proportional to 85,041.27, 127,561.65 and 40,657.65

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Solution

The fourth proportional to 85,041.27, 127,561.65 and 40,657.65 is: 60,986.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,041.27 : 127,561.65 = 40,657.65 : x
  2. Step 2: Convert to fraction form
    85,041.27/127,561.65 = 40,657.65/x
  3. Step 3: Cross multiply
    85,041.27x = 127,561.65 × 40,657.65
  4. Step 4: Simplify right side
    85,041.27x = 5,186,356,919.12
  5. Step 5: Solve for x
    x = 5,186,356,919.12/85,041.27
  6. Step 6: Final answer
    x = 60,986.35

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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.