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Finding the Fourth Proportional to 71,201.12, 98,256.12 and 39,369.20

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Solution

The fourth proportional to 71,201.12, 98,256.12 and 39,369.20 is: 54,328.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,201.12 : 98,256.12 = 39,369.20 : x
  2. Step 2: Convert to fraction form
    71,201.12/98,256.12 = 39,369.20/x
  3. Step 3: Cross multiply
    71,201.12x = 98,256.12 × 39,369.20
  4. Step 4: Simplify right side
    71,201.12x = 3,868,264,839.50
  5. Step 5: Solve for x
    x = 3,868,264,839.50/71,201.12
  6. Step 6: Final answer
    x = 54,328.71

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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.