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Finding the Fourth Proportional to 88,638, 122,251.26 and 56,809.92

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Solution

The fourth proportional to 88,638, 122,251.26 and 56,809.92 is: 78,353.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,638 : 122,251.26 = 56,809.92 : x
  2. Step 2: Convert to fraction form
    88,638/122,251.26 = 56,809.92/x
  3. Step 3: Cross multiply
    88,638x = 122,251.26 × 56,809.92
  4. Step 4: Simplify right side
    88,638x = 6,945,084,300.50
  5. Step 5: Solve for x
    x = 6,945,084,300.50/88,638
  6. Step 6: Final answer
    x = 78,353.35

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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.