Home / 66,399.55-91,635.91-40,569.15

Finding the Fourth Proportional to 66,399.55, 91,635.91 and 40,569.15

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Solution

The fourth proportional to 66,399.55, 91,635.91 and 40,569.15 is: 55,988.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,399.55 : 91,635.91 = 40,569.15 : x
  2. Step 2: Convert to fraction form
    66,399.55/91,635.91 = 40,569.15/x
  3. Step 3: Cross multiply
    66,399.55x = 91,635.91 × 40,569.15
  4. Step 4: Simplify right side
    66,399.55x = 3,717,591,220.39
  5. Step 5: Solve for x
    x = 3,717,591,220.39/66,399.55
  6. Step 6: Final answer
    x = 55,988.20

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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.