Home / 80,948.89-121,432.11-31,071.25

Finding the Fourth Proportional to 80,948.89, 121,432.11 and 31,071.25

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Solution

The fourth proportional to 80,948.89, 121,432.11 and 31,071.25 is: 46,610.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,948.89 : 121,432.11 = 31,071.25 : x
  2. Step 2: Convert to fraction form
    80,948.89/121,432.11 = 31,071.25/x
  3. Step 3: Cross multiply
    80,948.89x = 121,432.11 × 31,071.25
  4. Step 4: Simplify right side
    80,948.89x = 3,773,047,447.84
  5. Step 5: Solve for x
    x = 3,773,047,447.84/80,948.89
  6. Step 6: Final answer
    x = 46,610.24

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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.