Home / 82,154.08-113,401.68-48,620

Finding the Fourth Proportional to 82,154.08, 113,401.68 and 48,620

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Solution

The fourth proportional to 82,154.08, 113,401.68 and 48,620 is: 67,112.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,154.08 : 113,401.68 = 48,620 : x
  2. Step 2: Convert to fraction form
    82,154.08/113,401.68 = 48,620/x
  3. Step 3: Cross multiply
    82,154.08x = 113,401.68 × 48,620
  4. Step 4: Simplify right side
    82,154.08x = 5,513,589,681.60
  5. Step 5: Solve for x
    x = 5,513,589,681.60/82,154.08
  6. Step 6: Final answer
    x = 67,112.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.