Home / 91,586.35-126,432.45-61,391.39

Finding the Fourth Proportional to 91,586.35, 126,432.45 and 61,391.39

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Solution

The fourth proportional to 91,586.35, 126,432.45 and 61,391.39 is: 84,749.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,586.35 : 126,432.45 = 61,391.39 : x
  2. Step 2: Convert to fraction form
    91,586.35/126,432.45 = 61,391.39/x
  3. Step 3: Cross multiply
    91,586.35x = 126,432.45 × 61,391.39
  4. Step 4: Simplify right side
    91,586.35x = 7,761,864,162.69
  5. Step 5: Solve for x
    x = 7,761,864,162.69/91,586.35
  6. Step 6: Final answer
    x = 84,749.14

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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.