Home / 80,774,429.70-121,161,644.55-71,846,220.90

Finding the Fourth Proportional to 80,774,429.70, 121,161,644.55 and 71,846,220.90

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Solution

The fourth proportional to 80,774,429.70, 121,161,644.55 and 71,846,220.90 is: 107,769,331.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,774,429.70 : 121,161,644.55 = 71,846,220.90 : x
  2. Step 2: Convert to fraction form
    80,774,429.70/121,161,644.55 = 71,846,220.90/x
  3. Step 3: Cross multiply
    80,774,429.70x = 121,161,644.55 × 71,846,220.90
  4. Step 4: Simplify right side
    80,774,429.70x = 8,705,006,278,946,582
  5. Step 5: Solve for x
    x = 8,705,006,278,946,582/80,774,429.70
  6. Step 6: Final answer
    x = 107,769,331.35

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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.