Home / 82,378.20-123,470.10-61,577.40

Finding the Fourth Proportional to 82,378.20, 123,470.10 and 61,577.40

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Solution

The fourth proportional to 82,378.20, 123,470.10 and 61,577.40 is: 92,293.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,378.20 : 123,470.10 = 61,577.40 : x
  2. Step 2: Convert to fraction form
    82,378.20/123,470.10 = 61,577.40/x
  3. Step 3: Cross multiply
    82,378.20x = 123,470.10 × 61,577.40
  4. Step 4: Simplify right side
    82,378.20x = 7,602,967,735.74
  5. Step 5: Solve for x
    x = 7,602,967,735.74/82,378.20
  6. Step 6: Final answer
    x = 92,293.44

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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.