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Finding the Fourth Proportional to 103,023.60, 154,461.60 and 39,789.60

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Solution

The fourth proportional to 103,023.60, 154,461.60 and 39,789.60 is: 59,655.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,023.60 : 154,461.60 = 39,789.60 : x
  2. Step 2: Convert to fraction form
    103,023.60/154,461.60 = 39,789.60/x
  3. Step 3: Cross multiply
    103,023.60x = 154,461.60 × 39,789.60
  4. Step 4: Simplify right side
    103,023.60x = 6,145,965,279.36
  5. Step 5: Solve for x
    x = 6,145,965,279.36/103,023.60
  6. Step 6: Final answer
    x = 59,655.90

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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.