Home / 91,428.68-126,249.45-57,493.96

Finding the Fourth Proportional to 91,428.68, 126,249.45 and 57,493.96

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Solution

The fourth proportional to 91,428.68, 126,249.45 and 57,493.96 is: 79,390.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,428.68 : 126,249.45 = 57,493.96 : x
  2. Step 2: Convert to fraction form
    91,428.68/126,249.45 = 57,493.96/x
  3. Step 3: Cross multiply
    91,428.68x = 126,249.45 × 57,493.96
  4. Step 4: Simplify right side
    91,428.68x = 7,258,580,828.32
  5. Step 5: Solve for x
    x = 7,258,580,828.32/91,428.68
  6. Step 6: Final answer
    x = 79,390.63

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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.