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Finding the Fourth Proportional to 71,201.28, 98,253.78 and 39,368.28

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Solution

The fourth proportional to 71,201.28, 98,253.78 and 39,368.28 is: 54,326.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,201.28 : 98,253.78 = 39,368.28 : x
  2. Step 2: Convert to fraction form
    71,201.28/98,253.78 = 39,368.28/x
  3. Step 3: Cross multiply
    71,201.28x = 98,253.78 × 39,368.28
  4. Step 4: Simplify right side
    71,201.28x = 3,868,082,322.10
  5. Step 5: Solve for x
    x = 3,868,082,322.10/71,201.28
  6. Step 6: Final answer
    x = 54,326.02

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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.