Home / 78,702,980.68-108,613,331.11-43,424,847.61

Finding the Fourth Proportional to 78,702,980.68, 108,613,331.11 and 43,424,847.61

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Solution

The fourth proportional to 78,702,980.68, 108,613,331.11 and 43,424,847.61 is: 59,928,065.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,702,980.68 : 108,613,331.11 = 43,424,847.61 : x
  2. Step 2: Convert to fraction form
    78,702,980.68/108,613,331.11 = 43,424,847.61/x
  3. Step 3: Cross multiply
    78,702,980.68x = 108,613,331.11 × 43,424,847.61
  4. Step 4: Simplify right side
    78,702,980.68x = 4,716,517,351,969,517
  5. Step 5: Solve for x
    x = 4,716,517,351,969,517/78,702,980.68
  6. Step 6: Final answer
    x = 59,928,065.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.