Home / 73,200.12-109,778.40-31,079.60

Finding the Fourth Proportional to 73,200.12, 109,778.40 and 31,079.60

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Solution

The fourth proportional to 73,200.12, 109,778.40 and 31,079.60 is: 46,610.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,200.12 : 109,778.40 = 31,079.60 : x
  2. Step 2: Convert to fraction form
    73,200.12/109,778.40 = 31,079.60/x
  3. Step 3: Cross multiply
    73,200.12x = 109,778.40 × 31,079.60
  4. Step 4: Simplify right side
    73,200.12x = 3,411,868,760.64
  5. Step 5: Solve for x
    x = 3,411,868,760.64/73,200.12
  6. Step 6: Final answer
    x = 46,610.15

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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.