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Finding the Fourth Proportional to 88,980.88, 122,819.88 and 51,281.68

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Solution

The fourth proportional to 88,980.88, 122,819.88 and 51,281.68 is: 70,783.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,980.88 : 122,819.88 = 51,281.68 : x
  2. Step 2: Convert to fraction form
    88,980.88/122,819.88 = 51,281.68/x
  3. Step 3: Cross multiply
    88,980.88x = 122,819.88 × 51,281.68
  4. Step 4: Simplify right side
    88,980.88x = 6,298,409,783.80
  5. Step 5: Solve for x
    x = 6,298,409,783.80/88,980.88
  6. Step 6: Final answer
    x = 70,783.86

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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.