Home / 91,428.43-126,249.11-57,493.71

Finding the Fourth Proportional to 91,428.43, 126,249.11 and 57,493.71

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Solution

The fourth proportional to 91,428.43, 126,249.11 and 57,493.71 is: 79,390.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,428.43 : 126,249.11 = 57,493.71 : x
  2. Step 2: Convert to fraction form
    91,428.43/126,249.11 = 57,493.71/x
  3. Step 3: Cross multiply
    91,428.43x = 126,249.11 × 57,493.71
  4. Step 4: Simplify right side
    91,428.43x = 7,258,529,718.10
  5. Step 5: Solve for x
    x = 7,258,529,718.10/91,428.43
  6. Step 6: Final answer
    x = 79,390.29

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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.