Home / 81,648.88-122,461.08-38,943.52

Finding the Fourth Proportional to 81,648.88, 122,461.08 and 38,943.52

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Solution

The fourth proportional to 81,648.88, 122,461.08 and 38,943.52 is: 58,409.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,648.88 : 122,461.08 = 38,943.52 : x
  2. Step 2: Convert to fraction form
    81,648.88/122,461.08 = 38,943.52/x
  3. Step 3: Cross multiply
    81,648.88x = 122,461.08 × 38,943.52
  4. Step 4: Simplify right side
    81,648.88x = 4,769,065,518.20
  5. Step 5: Solve for x
    x = 4,769,065,518.20/81,648.88
  6. Step 6: Final answer
    x = 58,409.44

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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.