Home / 80,616.12-120,925.39-30,698.98

Finding the Fourth Proportional to 80,616.12, 120,925.39 and 30,698.98

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Solution

The fourth proportional to 80,616.12, 120,925.39 and 30,698.98 is: 46,048.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,616.12 : 120,925.39 = 30,698.98 : x
  2. Step 2: Convert to fraction form
    80,616.12/120,925.39 = 30,698.98/x
  3. Step 3: Cross multiply
    80,616.12x = 120,925.39 × 30,698.98
  4. Step 4: Simplify right side
    80,616.12x = 3,712,286,129.10
  5. Step 5: Solve for x
    x = 3,712,286,129.10/80,616.12
  6. Step 6: Final answer
    x = 46,048.93

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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.