Home / 71,915.88-99,247.32-40,085.04

Finding the Fourth Proportional to 71,915.88, 99,247.32 and 40,085.04

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Solution

The fourth proportional to 71,915.88, 99,247.32 and 40,085.04 is: 55,319.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,915.88 : 99,247.32 = 40,085.04 : x
  2. Step 2: Convert to fraction form
    71,915.88/99,247.32 = 40,085.04/x
  3. Step 3: Cross multiply
    71,915.88x = 99,247.32 × 40,085.04
  4. Step 4: Simplify right side
    71,915.88x = 3,978,332,792.09
  5. Step 5: Solve for x
    x = 3,978,332,792.09/71,915.88
  6. Step 6: Final answer
    x = 55,319.25

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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.