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Finding the Fourth Proportional to 88,230.50, 121,758.09 and 48,486.50

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Solution

The fourth proportional to 88,230.50, 121,758.09 and 48,486.50 is: 66,911.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,230.50 : 121,758.09 = 48,486.50 : x
  2. Step 2: Convert to fraction form
    88,230.50/121,758.09 = 48,486.50/x
  3. Step 3: Cross multiply
    88,230.50x = 121,758.09 × 48,486.50
  4. Step 4: Simplify right side
    88,230.50x = 5,903,623,630.79
  5. Step 5: Solve for x
    x = 5,903,623,630.79/88,230.50
  6. Step 6: Final answer
    x = 66,911.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.