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Finding the Fourth Proportional to 71,165.48, 98,208.38 and 39,334.38

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Solution

The fourth proportional to 71,165.48, 98,208.38 and 39,334.38 is: 54,281.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,165.48 : 98,208.38 = 39,334.38 : x
  2. Step 2: Convert to fraction form
    71,165.48/98,208.38 = 39,334.38/x
  3. Step 3: Cross multiply
    71,165.48x = 98,208.38 × 39,334.38
  4. Step 4: Simplify right side
    71,165.48x = 3,862,965,738.10
  5. Step 5: Solve for x
    x = 3,862,965,738.10/71,165.48
  6. Step 6: Final answer
    x = 54,281.45

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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.