Home / 76,765.59-115,148.38-29,985.66

Finding the Fourth Proportional to 76,765.59, 115,148.38 and 29,985.66

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Solution

The fourth proportional to 76,765.59, 115,148.38 and 29,985.66 is: 44,978.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,765.59 : 115,148.38 = 29,985.66 : x
  2. Step 2: Convert to fraction form
    76,765.59/115,148.38 = 29,985.66/x
  3. Step 3: Cross multiply
    76,765.59x = 115,148.38 × 29,985.66
  4. Step 4: Simplify right side
    76,765.59x = 3,452,799,721.68
  5. Step 5: Solve for x
    x = 3,452,799,721.68/76,765.59
  6. Step 6: Final answer
    x = 44,978.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.