Home / 82,495.20-123,742.80-48,815.40

Finding the Fourth Proportional to 82,495.20, 123,742.80 and 48,815.40

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Solution

The fourth proportional to 82,495.20, 123,742.80 and 48,815.40 is: 73,223.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,495.20 : 123,742.80 = 48,815.40 : x
  2. Step 2: Convert to fraction form
    82,495.20/123,742.80 = 48,815.40/x
  3. Step 3: Cross multiply
    82,495.20x = 123,742.80 × 48,815.40
  4. Step 4: Simplify right side
    82,495.20x = 6,040,554,279.12
  5. Step 5: Solve for x
    x = 6,040,554,279.12/82,495.20
  6. Step 6: Final answer
    x = 73,223.10

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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.