Home / 80,717.04-121,110.38-30,812.12

Finding the Fourth Proportional to 80,717.04, 121,110.38 and 30,812.12

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Solution

The fourth proportional to 80,717.04, 121,110.38 and 30,812.12 is: 46,231.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,717.04 : 121,110.38 = 30,812.12 : x
  2. Step 2: Convert to fraction form
    80,717.04/121,110.38 = 30,812.12/x
  3. Step 3: Cross multiply
    80,717.04x = 121,110.38 × 30,812.12
  4. Step 4: Simplify right side
    80,717.04x = 3,731,667,561.81
  5. Step 5: Solve for x
    x = 3,731,667,561.81/80,717.04
  6. Step 6: Final answer
    x = 46,231.47

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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.