Home / 76,904.42-115,392.15-30,169.70

Finding the Fourth Proportional to 76,904.42, 115,392.15 and 30,169.70

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Solution

The fourth proportional to 76,904.42, 115,392.15 and 30,169.70 is: 45,268.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,904.42 : 115,392.15 = 30,169.70 : x
  2. Step 2: Convert to fraction form
    76,904.42/115,392.15 = 30,169.70/x
  3. Step 3: Cross multiply
    76,904.42x = 115,392.15 × 30,169.70
  4. Step 4: Simplify right side
    76,904.42x = 3,481,346,547.86
  5. Step 5: Solve for x
    x = 3,481,346,547.86/76,904.42
  6. Step 6: Final answer
    x = 45,268.48

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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.