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Finding the Fourth Proportional to 71,174.04, 98,218.71 and 39,342.21

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Solution

The fourth proportional to 71,174.04, 98,218.71 and 39,342.21 is: 54,291.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,174.04 : 98,218.71 = 39,342.21 : x
  2. Step 2: Convert to fraction form
    71,174.04/98,218.71 = 39,342.21/x
  3. Step 3: Cross multiply
    71,174.04x = 98,218.71 × 39,342.21
  4. Step 4: Simplify right side
    71,174.04x = 3,864,141,114.75
  5. Step 5: Solve for x
    x = 3,864,141,114.75/71,174.04
  6. Step 6: Final answer
    x = 54,291.44

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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.