Home / 91,599.33-126,370.69-57,123.78

Finding the Fourth Proportional to 91,599.33, 126,370.69 and 57,123.78

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Solution

The fourth proportional to 91,599.33, 126,370.69 and 57,123.78 is: 78,808.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,599.33 : 126,370.69 = 57,123.78 : x
  2. Step 2: Convert to fraction form
    91,599.33/126,370.69 = 57,123.78/x
  3. Step 3: Cross multiply
    91,599.33x = 126,370.69 × 57,123.78
  4. Step 4: Simplify right side
    91,599.33x = 7,218,771,748.80
  5. Step 5: Solve for x
    x = 7,218,771,748.80/91,599.33
  6. Step 6: Final answer
    x = 78,808.13

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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.