Home / 80,657,859.77-120,986,390.46-69,694,688.35

Finding the Fourth Proportional to 80,657,859.77, 120,986,390.46 and 69,694,688.35

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Solution

The fourth proportional to 80,657,859.77, 120,986,390.46 and 69,694,688.35 is: 104,541,687.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,657,859.77 : 120,986,390.46 = 69,694,688.35 : x
  2. Step 2: Convert to fraction form
    80,657,859.77/120,986,390.46 = 69,694,688.35/x
  3. Step 3: Cross multiply
    80,657,859.77x = 120,986,390.46 × 69,694,688.35
  4. Step 4: Simplify right side
    80,657,859.77x = 8,432,108,777,398,646
  5. Step 5: Solve for x
    x = 8,432,108,777,398,646/80,657,859.77
  6. Step 6: Final answer
    x = 104,541,687.59

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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.