Home / 80,457,790.65-120,686,685.98-19,873,516.65

Finding the Fourth Proportional to 80,457,790.65, 120,686,685.98 and 19,873,516.65

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Solution

The fourth proportional to 80,457,790.65, 120,686,685.98 and 19,873,516.65 is: 29,810,274.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,457,790.65 : 120,686,685.98 = 19,873,516.65 : x
  2. Step 2: Convert to fraction form
    80,457,790.65/120,686,685.98 = 19,873,516.65/x
  3. Step 3: Cross multiply
    80,457,790.65x = 120,686,685.98 × 19,873,516.65
  4. Step 4: Simplify right side
    80,457,790.65x = 2,398,468,863,157,483.50
  5. Step 5: Solve for x
    x = 2,398,468,863,157,483.50/80,457,790.65
  6. Step 6: Final answer
    x = 29,810,274.98

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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.