Home / 76,212.72-105,195.78-49,354.20

Finding the Fourth Proportional to 76,212.72, 105,195.78 and 49,354.20

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Solution

The fourth proportional to 76,212.72, 105,195.78 and 49,354.20 is: 68,123.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,212.72 : 105,195.78 = 49,354.20 : x
  2. Step 2: Convert to fraction form
    76,212.72/105,195.78 = 49,354.20/x
  3. Step 3: Cross multiply
    76,212.72x = 105,195.78 × 49,354.20
  4. Step 4: Simplify right side
    76,212.72x = 5,191,853,565.28
  5. Step 5: Solve for x
    x = 5,191,853,565.28/76,212.72
  6. Step 6: Final answer
    x = 68,123.19

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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.