Home / 71,915.34-99,243.66-40,086.24

Finding the Fourth Proportional to 71,915.34, 99,243.66 and 40,086.24

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Solution

The fourth proportional to 71,915.34, 99,243.66 and 40,086.24 is: 55,319.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,915.34 : 99,243.66 = 40,086.24 : x
  2. Step 2: Convert to fraction form
    71,915.34/99,243.66 = 40,086.24/x
  3. Step 3: Cross multiply
    71,915.34x = 99,243.66 × 40,086.24
  4. Step 4: Simplify right side
    71,915.34x = 3,978,305,173.24
  5. Step 5: Solve for x
    x = 3,978,305,173.24/71,915.34
  6. Step 6: Final answer
    x = 55,319.28

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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.