Home / 81,453.72-122,222.40-38,807.46

Finding the Fourth Proportional to 81,453.72, 122,222.40 and 38,807.46

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Solution

The fourth proportional to 81,453.72, 122,222.40 and 38,807.46 is: 58,231.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,453.72 : 122,222.40 = 38,807.46 : x
  2. Step 2: Convert to fraction form
    81,453.72/122,222.40 = 38,807.46/x
  3. Step 3: Cross multiply
    81,453.72x = 122,222.40 × 38,807.46
  4. Step 4: Simplify right side
    81,453.72x = 4,743,140,899.10
  5. Step 5: Solve for x
    x = 4,743,140,899.10/81,453.72
  6. Step 6: Final answer
    x = 58,231.11

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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.