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Finding the Fourth Proportional to 71,174, 98,219.40 and 39,341.36

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Solution

The fourth proportional to 71,174, 98,219.40 and 39,341.36 is: 54,290.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,174 : 98,219.40 = 39,341.36 : x
  2. Step 2: Convert to fraction form
    71,174/98,219.40 = 39,341.36/x
  3. Step 3: Cross multiply
    71,174x = 98,219.40 × 39,341.36
  4. Step 4: Simplify right side
    71,174x = 3,864,084,774.38
  5. Step 5: Solve for x
    x = 3,864,084,774.38/71,174
  6. Step 6: Final answer
    x = 54,290.68

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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.