Home / 71,388.54-98,514.98-39,122.90

Finding the Fourth Proportional to 71,388.54, 98,514.98 and 39,122.90

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Solution

The fourth proportional to 71,388.54, 98,514.98 and 39,122.90 is: 53,988.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,388.54 : 98,514.98 = 39,122.90 : x
  2. Step 2: Convert to fraction form
    71,388.54/98,514.98 = 39,122.90/x
  3. Step 3: Cross multiply
    71,388.54x = 98,514.98 × 39,122.90
  4. Step 4: Simplify right side
    71,388.54x = 3,854,191,711.04
  5. Step 5: Solve for x
    x = 3,854,191,711.04/71,388.54
  6. Step 6: Final answer
    x = 53,988.94

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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.