Home / 80,929.41-121,445.96-39,353.73

Finding the Fourth Proportional to 80,929.41, 121,445.96 and 39,353.73

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Solution

The fourth proportional to 80,929.41, 121,445.96 and 39,353.73 is: 59,055.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,929.41 : 121,445.96 = 39,353.73 : x
  2. Step 2: Convert to fraction form
    80,929.41/121,445.96 = 39,353.73/x
  3. Step 3: Cross multiply
    80,929.41x = 121,445.96 × 39,353.73
  4. Step 4: Simplify right side
    80,929.41x = 4,779,351,519.43
  5. Step 5: Solve for x
    x = 4,779,351,519.43/80,929.41
  6. Step 6: Final answer
    x = 59,055.81

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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.