Home / 76,766.93-115,150.40-29,987

Finding the Fourth Proportional to 76,766.93, 115,150.40 and 29,987

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Solution

The fourth proportional to 76,766.93, 115,150.40 and 29,987 is: 44,980.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,766.93 : 115,150.40 = 29,987 : x
  2. Step 2: Convert to fraction form
    76,766.93/115,150.40 = 29,987/x
  3. Step 3: Cross multiply
    76,766.93x = 115,150.40 × 29,987
  4. Step 4: Simplify right side
    76,766.93x = 3,453,015,044.80
  5. Step 5: Solve for x
    x = 3,453,015,044.80/76,766.93
  6. Step 6: Final answer
    x = 44,980.50

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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.