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Finding the Fourth Proportional to 85,043.66, 127,565.50 and 60,381.48

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Solution

The fourth proportional to 85,043.66, 127,565.50 and 60,381.48 is: 90,572.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,043.66 : 127,565.50 = 60,381.48 : x
  2. Step 2: Convert to fraction form
    85,043.66/127,565.50 = 60,381.48/x
  3. Step 3: Cross multiply
    85,043.66x = 127,565.50 × 60,381.48
  4. Step 4: Simplify right side
    85,043.66x = 7,702,593,686.94
  5. Step 5: Solve for x
    x = 7,702,593,686.94/85,043.66
  6. Step 6: Final answer
    x = 90,572.23

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Double scale
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1.5x scale

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.