Home / 71,681.14-98,922.52-39,418.20

Finding the Fourth Proportional to 71,681.14, 98,922.52 and 39,418.20

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Solution

The fourth proportional to 71,681.14, 98,922.52 and 39,418.20 is: 54,398.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,681.14 : 98,922.52 = 39,418.20 : x
  2. Step 2: Convert to fraction form
    71,681.14/98,922.52 = 39,418.20/x
  3. Step 3: Cross multiply
    71,681.14x = 98,922.52 × 39,418.20
  4. Step 4: Simplify right side
    71,681.14x = 3,899,347,677.86
  5. Step 5: Solve for x
    x = 3,899,347,677.86/71,681.14
  6. Step 6: Final answer
    x = 54,398.52

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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.