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Finding the Fourth Proportional to 65,331.92, 90,185.64 and 44,139.89

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Solution

The fourth proportional to 65,331.92, 90,185.64 and 44,139.89 is: 60,931.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,331.92 : 90,185.64 = 44,139.89 : x
  2. Step 2: Convert to fraction form
    65,331.92/90,185.64 = 44,139.89/x
  3. Step 3: Cross multiply
    65,331.92x = 90,185.64 × 44,139.89
  4. Step 4: Simplify right side
    65,331.92x = 3,980,784,008.48
  5. Step 5: Solve for x
    x = 3,980,784,008.48/65,331.92
  6. Step 6: Final answer
    x = 60,931.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.