Home / 80,792.15-121,207.44-40,712.64

Finding the Fourth Proportional to 80,792.15, 121,207.44 and 40,712.64

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Solution

The fourth proportional to 80,792.15, 121,207.44 and 40,712.64 is: 61,078.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,792.15 : 121,207.44 = 40,712.64 : x
  2. Step 2: Convert to fraction form
    80,792.15/121,207.44 = 40,712.64/x
  3. Step 3: Cross multiply
    80,792.15x = 121,207.44 × 40,712.64
  4. Step 4: Simplify right side
    80,792.15x = 4,934,674,870.04
  5. Step 5: Solve for x
    x = 4,934,674,870.04/80,792.15
  6. Step 6: Final answer
    x = 61,078.65

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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.