Home / 31,815.69-47,723.55-8,125.01

Finding the Fourth Proportional to 31,815.69, 47,723.55 and 8,125.01

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Solution

The fourth proportional to 31,815.69, 47,723.55 and 8,125.01 is: 12,187.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,815.69 : 47,723.55 = 8,125.01 : x
  2. Step 2: Convert to fraction form
    31,815.69/47,723.55 = 8,125.01/x
  3. Step 3: Cross multiply
    31,815.69x = 47,723.55 × 8,125.01
  4. Step 4: Simplify right side
    31,815.69x = 387,754,230.86
  5. Step 5: Solve for x
    x = 387,754,230.86/31,815.69
  6. Step 6: Final answer
    x = 12,187.52

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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.