Home / 80,681.81-121,022.54-38,433.75

Finding the Fourth Proportional to 80,681.81, 121,022.54 and 38,433.75

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Solution

The fourth proportional to 80,681.81, 121,022.54 and 38,433.75 is: 57,650.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,681.81 : 121,022.54 = 38,433.75 : x
  2. Step 2: Convert to fraction form
    80,681.81/121,022.54 = 38,433.75/x
  3. Step 3: Cross multiply
    80,681.81x = 121,022.54 × 38,433.75
  4. Step 4: Simplify right side
    80,681.81x = 4,651,350,557.93
  5. Step 5: Solve for x
    x = 4,651,350,557.93/80,681.81
  6. Step 6: Final answer
    x = 57,650.55

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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.