Home / 81,541.11-122,152.49-56,180.79

Finding the Fourth Proportional to 81,541.11, 122,152.49 and 56,180.79

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Solution

The fourth proportional to 81,541.11, 122,152.49 and 56,180.79 is: 84,161.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,541.11 : 122,152.49 = 56,180.79 : x
  2. Step 2: Convert to fraction form
    81,541.11/122,152.49 = 56,180.79/x
  3. Step 3: Cross multiply
    81,541.11x = 122,152.49 × 56,180.79
  4. Step 4: Simplify right side
    81,541.11x = 6,862,623,388.67
  5. Step 5: Solve for x
    x = 6,862,623,388.67/81,541.11
  6. Step 6: Final answer
    x = 84,161.52

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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.