Home / 81,170.96-121,758.54-38,466.38

Finding the Fourth Proportional to 81,170.96, 121,758.54 and 38,466.38

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Solution

The fourth proportional to 81,170.96, 121,758.54 and 38,466.38 is: 57,700.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,170.96 : 121,758.54 = 38,466.38 : x
  2. Step 2: Convert to fraction form
    81,170.96/121,758.54 = 38,466.38/x
  3. Step 3: Cross multiply
    81,170.96x = 121,758.54 × 38,466.38
  4. Step 4: Simplify right side
    81,170.96x = 4,683,610,572.28
  5. Step 5: Solve for x
    x = 4,683,610,572.28/81,170.96
  6. Step 6: Final answer
    x = 57,700.57

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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.