Home / 66,102.28-91,179.60-39,225.76

Finding the Fourth Proportional to 66,102.28, 91,179.60 and 39,225.76

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Solution

The fourth proportional to 66,102.28, 91,179.60 and 39,225.76 is: 54,106.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,102.28 : 91,179.60 = 39,225.76 : x
  2. Step 2: Convert to fraction form
    66,102.28/91,179.60 = 39,225.76/x
  3. Step 3: Cross multiply
    66,102.28x = 91,179.60 × 39,225.76
  4. Step 4: Simplify right side
    66,102.28x = 3,576,589,106.50
  5. Step 5: Solve for x
    x = 3,576,589,106.50/66,102.28
  6. Step 6: Final answer
    x = 54,106.89

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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.