Home / 72,068,456.89-108,121,119.70-20,950,475.70

Finding the Fourth Proportional to 72,068,456.89, 108,121,119.70 and 20,950,475.70

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Solution

The fourth proportional to 72,068,456.89, 108,121,119.70 and 20,950,475.70 is: 31,431,072.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,068,456.89 : 108,121,119.70 = 20,950,475.70 : x
  2. Step 2: Convert to fraction form
    72,068,456.89/108,121,119.70 = 20,950,475.70/x
  3. Step 3: Cross multiply
    72,068,456.89x = 108,121,119.70 × 20,950,475.70
  4. Step 4: Simplify right side
    72,068,456.89x = 2,265,188,890,931,641.50
  5. Step 5: Solve for x
    x = 2,265,188,890,931,641.50/72,068,456.89
  6. Step 6: Final answer
    x = 31,431,072.46

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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.