Home / 80,457,686.15-120,686,529.23-19,873,412.15

Finding the Fourth Proportional to 80,457,686.15, 120,686,529.23 and 19,873,412.15

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Solution

The fourth proportional to 80,457,686.15, 120,686,529.23 and 19,873,412.15 is: 29,810,118.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,457,686.15 : 120,686,529.23 = 19,873,412.15 : x
  2. Step 2: Convert to fraction form
    80,457,686.15/120,686,529.23 = 19,873,412.15/x
  3. Step 3: Cross multiply
    80,457,686.15x = 120,686,529.23 × 19,873,412.15
  4. Step 4: Simplify right side
    80,457,686.15x = 2,398,453,136,340,812
  5. Step 5: Solve for x
    x = 2,398,453,136,340,812/80,457,686.15
  6. Step 6: Final answer
    x = 29,810,118.23

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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.