Home / 91,676.20-126,522.12-51,390.04

Finding the Fourth Proportional to 91,676.20, 126,522.12 and 51,390.04

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Solution

The fourth proportional to 91,676.20, 126,522.12 and 51,390.04 is: 70,923.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,676.20 : 126,522.12 = 51,390.04 : x
  2. Step 2: Convert to fraction form
    91,676.20/126,522.12 = 51,390.04/x
  3. Step 3: Cross multiply
    91,676.20x = 126,522.12 × 51,390.04
  4. Step 4: Simplify right side
    91,676.20x = 6,501,976,807.68
  5. Step 5: Solve for x
    x = 6,501,976,807.68/91,676.20
  6. Step 6: Final answer
    x = 70,923.28

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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.