Home / 71,387.87-98,519.20-39,556.08

Finding the Fourth Proportional to 71,387.87, 98,519.20 and 39,556.08

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Solution

The fourth proportional to 71,387.87, 98,519.20 and 39,556.08 is: 54,589.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,387.87 : 98,519.20 = 39,556.08 : x
  2. Step 2: Convert to fraction form
    71,387.87/98,519.20 = 39,556.08/x
  3. Step 3: Cross multiply
    71,387.87x = 98,519.20 × 39,556.08
  4. Step 4: Simplify right side
    71,387.87x = 3,897,033,356.74
  5. Step 5: Solve for x
    x = 3,897,033,356.74/71,387.87
  6. Step 6: Final answer
    x = 54,589.57

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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.