Home / 71,387.49-98,518.68-39,555.71

Finding the Fourth Proportional to 71,387.49, 98,518.68 and 39,555.71

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Solution

The fourth proportional to 71,387.49, 98,518.68 and 39,555.71 is: 54,589.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,387.49 : 98,518.68 = 39,555.71 : x
  2. Step 2: Convert to fraction form
    71,387.49/98,518.68 = 39,555.71/x
  3. Step 3: Cross multiply
    71,387.49x = 98,518.68 × 39,555.71
  4. Step 4: Simplify right side
    71,387.49x = 3,896,976,335.66
  5. Step 5: Solve for x
    x = 3,896,976,335.66/71,387.49
  6. Step 6: Final answer
    x = 54,589.07

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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.