Home / 81,688.90-122,427.41-36,677.03

Finding the Fourth Proportional to 81,688.90, 122,427.41 and 36,677.03

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Solution

The fourth proportional to 81,688.90, 122,427.41 and 36,677.03 is: 54,967.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,688.90 : 122,427.41 = 36,677.03 : x
  2. Step 2: Convert to fraction form
    81,688.90/122,427.41 = 36,677.03/x
  3. Step 3: Cross multiply
    81,688.90x = 122,427.41 × 36,677.03
  4. Step 4: Simplify right side
    81,688.90x = 4,490,273,452.97
  5. Step 5: Solve for x
    x = 4,490,273,452.97/81,688.90
  6. Step 6: Final answer
    x = 54,967.98

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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.