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Finding the Fourth Proportional to 81,989.77, 122,984.68 and 63,297.10

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Solution

The fourth proportional to 81,989.77, 122,984.68 and 63,297.10 is: 94,945.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,989.77 : 122,984.68 = 63,297.10 : x
  2. Step 2: Convert to fraction form
    81,989.77/122,984.68 = 63,297.10/x
  3. Step 3: Cross multiply
    81,989.77x = 122,984.68 × 63,297.10
  4. Step 4: Simplify right side
    81,989.77x = 7,784,572,973.50
  5. Step 5: Solve for x
    x = 7,784,572,973.50/81,989.77
  6. Step 6: Final answer
    x = 94,945.66

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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.