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Finding the Fourth Proportional to 71,451, 98,605.13 and 39,619.22

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Solution

The fourth proportional to 71,451, 98,605.13 and 39,619.22 is: 54,676.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,451 : 98,605.13 = 39,619.22 : x
  2. Step 2: Convert to fraction form
    71,451/98,605.13 = 39,619.22/x
  3. Step 3: Cross multiply
    71,451x = 98,605.13 × 39,619.22
  4. Step 4: Simplify right side
    71,451x = 3,906,657,647.48
  5. Step 5: Solve for x
    x = 3,906,657,647.48/71,451
  6. Step 6: Final answer
    x = 54,676.04

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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.