Home / 76,948.76-115,422.64-20,794.48

Finding the Fourth Proportional to 76,948.76, 115,422.64 and 20,794.48

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Solution

The fourth proportional to 76,948.76, 115,422.64 and 20,794.48 is: 31,191.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,948.76 : 115,422.64 = 20,794.48 : x
  2. Step 2: Convert to fraction form
    76,948.76/115,422.64 = 20,794.48/x
  3. Step 3: Cross multiply
    76,948.76x = 115,422.64 × 20,794.48
  4. Step 4: Simplify right side
    76,948.76x = 2,400,153,438.48
  5. Step 5: Solve for x
    x = 2,400,153,438.48/76,948.76
  6. Step 6: Final answer
    x = 31,191.58

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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.