Home / 81,004.20-121,490.64-24,830.70

Finding the Fourth Proportional to 81,004.20, 121,490.64 and 24,830.70

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Solution

The fourth proportional to 81,004.20, 121,490.64 and 24,830.70 is: 37,241.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,004.20 : 121,490.64 = 24,830.70 : x
  2. Step 2: Convert to fraction form
    81,004.20/121,490.64 = 24,830.70/x
  3. Step 3: Cross multiply
    81,004.20x = 121,490.64 × 24,830.70
  4. Step 4: Simplify right side
    81,004.20x = 3,016,697,634.65
  5. Step 5: Solve for x
    x = 3,016,697,634.65/81,004.20
  6. Step 6: Final answer
    x = 37,241.25

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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.