Home / 71,257.36-98,328.12-39,421.84

Finding the Fourth Proportional to 71,257.36, 98,328.12 and 39,421.84

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Solution

The fourth proportional to 71,257.36, 98,328.12 and 39,421.84 is: 54,398.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,257.36 : 98,328.12 = 39,421.84 : x
  2. Step 2: Convert to fraction form
    71,257.36/98,328.12 = 39,421.84/x
  3. Step 3: Cross multiply
    71,257.36x = 98,328.12 × 39,421.84
  4. Step 4: Simplify right side
    71,257.36x = 3,876,275,414.14
  5. Step 5: Solve for x
    x = 3,876,275,414.14/71,257.36
  6. Step 6: Final answer
    x = 54,398.25

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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.