Home / 80,252.36-120,312.86-30,304.12

Finding the Fourth Proportional to 80,252.36, 120,312.86 and 30,304.12

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Solution

The fourth proportional to 80,252.36, 120,312.86 and 30,304.12 is: 45,431.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,252.36 : 120,312.86 = 30,304.12 : x
  2. Step 2: Convert to fraction form
    80,252.36/120,312.86 = 30,304.12/x
  3. Step 3: Cross multiply
    80,252.36x = 120,312.86 × 30,304.12
  4. Step 4: Simplify right side
    80,252.36x = 3,645,975,346.98
  5. Step 5: Solve for x
    x = 3,645,975,346.98/80,252.36
  6. Step 6: Final answer
    x = 45,431.38

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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.