Home / 72,538,726.11-108,822,449.40-20,723,769.89

Finding the Fourth Proportional to 72,538,726.11, 108,822,449.40 and 20,723,769.89

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Solution

The fourth proportional to 72,538,726.11, 108,822,449.40 and 20,723,769.89 is: 31,089,757.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,538,726.11 : 108,822,449.40 = 20,723,769.89 : x
  2. Step 2: Convert to fraction form
    72,538,726.11/108,822,449.40 = 20,723,769.89/x
  3. Step 3: Cross multiply
    72,538,726.11x = 108,822,449.40 × 20,723,769.89
  4. Step 4: Simplify right side
    72,538,726.11x = 2,255,211,400,503,824.50
  5. Step 5: Solve for x
    x = 2,255,211,400,503,824.50/72,538,726.11
  6. Step 6: Final answer
    x = 31,089,757.45

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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.