Home / 71,431.85-98,577.15-39,165.80

Finding the Fourth Proportional to 71,431.85, 98,577.15 and 39,165.80

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Solution

The fourth proportional to 71,431.85, 98,577.15 and 39,165.80 is: 54,049.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,431.85 : 98,577.15 = 39,165.80 : x
  2. Step 2: Convert to fraction form
    71,431.85/98,577.15 = 39,165.80/x
  3. Step 3: Cross multiply
    71,431.85x = 98,577.15 × 39,165.80
  4. Step 4: Simplify right side
    71,431.85x = 3,860,852,941.47
  5. Step 5: Solve for x
    x = 3,860,852,941.47/71,431.85
  6. Step 6: Final answer
    x = 54,049.46

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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.