Home / 80,934.68-121,403.12-31,017.32

Finding the Fourth Proportional to 80,934.68, 121,403.12 and 31,017.32

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Solution

The fourth proportional to 80,934.68, 121,403.12 and 31,017.32 is: 46,526.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,934.68 : 121,403.12 = 31,017.32 : x
  2. Step 2: Convert to fraction form
    80,934.68/121,403.12 = 31,017.32/x
  3. Step 3: Cross multiply
    80,934.68x = 121,403.12 × 31,017.32
  4. Step 4: Simplify right side
    80,934.68x = 3,765,599,422.04
  5. Step 5: Solve for x
    x = 3,765,599,422.04/80,934.68
  6. Step 6: Final answer
    x = 46,526.40

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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.