Home / 69,788.12-96,310.16-39,985.88

Finding the Fourth Proportional to 69,788.12, 96,310.16 and 39,985.88

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Solution

The fourth proportional to 69,788.12, 96,310.16 and 39,985.88 is: 55,181.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,788.12 : 96,310.16 = 39,985.88 : x
  2. Step 2: Convert to fraction form
    69,788.12/96,310.16 = 39,985.88/x
  3. Step 3: Cross multiply
    69,788.12x = 96,310.16 × 39,985.88
  4. Step 4: Simplify right side
    69,788.12x = 3,851,046,500.54
  5. Step 5: Solve for x
    x = 3,851,046,500.54/69,788.12
  6. Step 6: Final answer
    x = 55,181.98

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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.