Home / 91,865.16-126,778.68-51,576.84

Finding the Fourth Proportional to 91,865.16, 126,778.68 and 51,576.84

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Solution

The fourth proportional to 91,865.16, 126,778.68 and 51,576.84 is: 71,178.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,865.16 : 126,778.68 = 51,576.84 : x
  2. Step 2: Convert to fraction form
    91,865.16/126,778.68 = 51,576.84/x
  3. Step 3: Cross multiply
    91,865.16x = 126,778.68 × 51,576.84
  4. Step 4: Simplify right side
    91,865.16x = 6,538,843,693.77
  5. Step 5: Solve for x
    x = 6,538,843,693.77/91,865.16
  6. Step 6: Final answer
    x = 71,178.71

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1.5x scale

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.