Home / 81,887.04-122,826.24-40,320

Finding the Fourth Proportional to 81,887.04, 122,826.24 and 40,320

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Solution

The fourth proportional to 81,887.04, 122,826.24 and 40,320 is: 60,477.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,887.04 : 122,826.24 = 40,320 : x
  2. Step 2: Convert to fraction form
    81,887.04/122,826.24 = 40,320/x
  3. Step 3: Cross multiply
    81,887.04x = 122,826.24 × 40,320
  4. Step 4: Simplify right side
    81,887.04x = 4,952,353,996.80
  5. Step 5: Solve for x
    x = 4,952,353,996.80/81,887.04
  6. Step 6: Final answer
    x = 60,477.87

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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.