Home / 80,457,689.65-120,686,534.48-19,873,415.65

Finding the Fourth Proportional to 80,457,689.65, 120,686,534.48 and 19,873,415.65

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Solution

The fourth proportional to 80,457,689.65, 120,686,534.48 and 19,873,415.65 is: 29,810,123.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,457,689.65 : 120,686,534.48 = 19,873,415.65 : x
  2. Step 2: Convert to fraction form
    80,457,689.65/120,686,534.48 = 19,873,415.65/x
  3. Step 3: Cross multiply
    80,457,689.65x = 120,686,534.48 × 19,873,415.65
  4. Step 4: Simplify right side
    80,457,689.65x = 2,398,453,663,079,096.50
  5. Step 5: Solve for x
    x = 2,398,453,663,079,096.50/80,457,689.65
  6. Step 6: Final answer
    x = 29,810,123.48

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Double scale
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1.5x scale

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.