Home / 72,582,078.20-108,873,117.30-18,729,390.20

Finding the Fourth Proportional to 72,582,078.20, 108,873,117.30 and 18,729,390.20

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Solution

The fourth proportional to 72,582,078.20, 108,873,117.30 and 18,729,390.20 is: 28,094,085.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,582,078.20 : 108,873,117.30 = 18,729,390.20 : x
  2. Step 2: Convert to fraction form
    72,582,078.20/108,873,117.30 = 18,729,390.20/x
  3. Step 3: Cross multiply
    72,582,078.20x = 108,873,117.30 × 18,729,390.20
  4. Step 4: Simplify right side
    72,582,078.20x = 2,039,127,096,202,070.25
  5. Step 5: Solve for x
    x = 2,039,127,096,202,070.25/72,582,078.20
  6. Step 6: Final answer
    x = 28,094,085.30

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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.