Home / 80,639,047.80-120,959,009.10-20,054,773.80

Finding the Fourth Proportional to 80,639,047.80, 120,959,009.10 and 20,054,773.80

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Solution

The fourth proportional to 80,639,047.80, 120,959,009.10 and 20,054,773.80 is: 30,082,269.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,639,047.80 : 120,959,009.10 = 20,054,773.80 : x
  2. Step 2: Convert to fraction form
    80,639,047.80/120,959,009.10 = 20,054,773.80/x
  3. Step 3: Cross multiply
    80,639,047.80x = 120,959,009.10 × 20,054,773.80
  4. Step 4: Simplify right side
    80,639,047.80x = 2,425,805,566,572,641.50
  5. Step 5: Solve for x
    x = 2,425,805,566,572,641.50/80,639,047.80
  6. Step 6: Final answer
    x = 30,082,269.48

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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.