Home / 81,989.40-122,984.12-63,296.72

Finding the Fourth Proportional to 81,989.40, 122,984.12 and 63,296.72

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Solution

The fourth proportional to 81,989.40, 122,984.12 and 63,296.72 is: 94,945.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,989.40 : 122,984.12 = 63,296.72 : x
  2. Step 2: Convert to fraction form
    81,989.40/122,984.12 = 63,296.72/x
  3. Step 3: Cross multiply
    81,989.40x = 122,984.12 × 63,296.72
  4. Step 4: Simplify right side
    81,989.40x = 7,784,490,784.14
  5. Step 5: Solve for x
    x = 7,784,490,784.14/81,989.40
  6. Step 6: Final answer
    x = 94,945.09

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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.