Home / 81,220.44-121,704.78-56,308.92

Finding the Fourth Proportional to 81,220.44, 121,704.78 and 56,308.92

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Solution

The fourth proportional to 81,220.44, 121,704.78 and 56,308.92 is: 84,376.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,220.44 : 121,704.78 = 56,308.92 : x
  2. Step 2: Convert to fraction form
    81,220.44/121,704.78 = 56,308.92/x
  3. Step 3: Cross multiply
    81,220.44x = 121,704.78 × 56,308.92
  4. Step 4: Simplify right side
    81,220.44x = 6,853,064,720.64
  5. Step 5: Solve for x
    x = 6,853,064,720.64/81,220.44
  6. Step 6: Final answer
    x = 84,376.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.