Home / 76,937.80-115,337.04-30,178.12

Finding the Fourth Proportional to 76,937.80, 115,337.04 and 30,178.12

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Solution

The fourth proportional to 76,937.80, 115,337.04 and 30,178.12 is: 45,239.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,937.80 : 115,337.04 = 30,178.12 : x
  2. Step 2: Convert to fraction form
    76,937.80/115,337.04 = 30,178.12/x
  3. Step 3: Cross multiply
    76,937.80x = 115,337.04 × 30,178.12
  4. Step 4: Simplify right side
    76,937.80x = 3,480,655,033.56
  5. Step 5: Solve for x
    x = 3,480,655,033.56/76,937.80
  6. Step 6: Final answer
    x = 45,239.86

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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.