Home / 80,766.33-121,140.23-21,606.63

Finding the Fourth Proportional to 80,766.33, 121,140.23 and 21,606.63

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Solution

The fourth proportional to 80,766.33, 121,140.23 and 21,606.63 is: 32,407.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,766.33 : 121,140.23 = 21,606.63 : x
  2. Step 2: Convert to fraction form
    80,766.33/121,140.23 = 21,606.63/x
  3. Step 3: Cross multiply
    80,766.33x = 121,140.23 × 21,606.63
  4. Step 4: Simplify right side
    80,766.33x = 2,617,432,019.69
  5. Step 5: Solve for x
    x = 2,617,432,019.69/80,766.33
  6. Step 6: Final answer
    x = 32,407.47

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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.