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Finding the Fourth Proportional to 71,955.69, 99,299.28 and 40,126.60

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Solution

The fourth proportional to 71,955.69, 99,299.28 and 40,126.60 is: 55,374.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,955.69 : 99,299.28 = 40,126.60 : x
  2. Step 2: Convert to fraction form
    71,955.69/99,299.28 = 40,126.60/x
  3. Step 3: Cross multiply
    71,955.69x = 99,299.28 × 40,126.60
  4. Step 4: Simplify right side
    71,955.69x = 3,984,542,488.85
  5. Step 5: Solve for x
    x = 3,984,542,488.85/71,955.69
  6. Step 6: Final answer
    x = 55,374.95

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1.5x scale

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.