Home / 72,181,347.80-108,287,768.10-21,059,202.20

Finding the Fourth Proportional to 72,181,347.80, 108,287,768.10 and 21,059,202.20

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Solution

The fourth proportional to 72,181,347.80, 108,287,768.10 and 21,059,202.20 is: 31,593,397.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,181,347.80 : 108,287,768.10 = 21,059,202.20 : x
  2. Step 2: Convert to fraction form
    72,181,347.80/108,287,768.10 = 21,059,202.20/x
  3. Step 3: Cross multiply
    72,181,347.80x = 108,287,768.10 × 21,059,202.20
  4. Step 4: Simplify right side
    72,181,347.80x = 2,280,454,004,204,609.50
  5. Step 5: Solve for x
    x = 2,280,454,004,204,609.50/72,181,347.80
  6. Step 6: Final answer
    x = 31,593,397.38

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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.