Home / 71,252.40-98,327.88-39,420.64

Finding the Fourth Proportional to 71,252.40, 98,327.88 and 39,420.64

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Solution

The fourth proportional to 71,252.40, 98,327.88 and 39,420.64 is: 54,400.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,252.40 : 98,327.88 = 39,420.64 : x
  2. Step 2: Convert to fraction form
    71,252.40/98,327.88 = 39,420.64/x
  3. Step 3: Cross multiply
    71,252.40x = 98,327.88 × 39,420.64
  4. Step 4: Simplify right side
    71,252.40x = 3,876,147,959.44
  5. Step 5: Solve for x
    x = 3,876,147,959.44/71,252.40
  6. Step 6: Final answer
    x = 54,400.24

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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.