Home / 81,847.18-122,047.93-71,892.69

Finding the Fourth Proportional to 81,847.18, 122,047.93 and 71,892.69

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Solution

The fourth proportional to 81,847.18, 122,047.93 and 71,892.69 is: 107,204.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,847.18 : 122,047.93 = 71,892.69 : x
  2. Step 2: Convert to fraction form
    81,847.18/122,047.93 = 71,892.69/x
  3. Step 3: Cross multiply
    81,847.18x = 122,047.93 × 71,892.69
  4. Step 4: Simplify right side
    81,847.18x = 8,774,353,996.63
  5. Step 5: Solve for x
    x = 8,774,353,996.63/81,847.18
  6. Step 6: Final answer
    x = 107,204.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.