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Finding the Fourth Proportional to 88,426.60, 132,639.90 and 70,930.60

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Solution

The fourth proportional to 88,426.60, 132,639.90 and 70,930.60 is: 106,395.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,426.60 : 132,639.90 = 70,930.60 : x
  2. Step 2: Convert to fraction form
    88,426.60/132,639.90 = 70,930.60/x
  3. Step 3: Cross multiply
    88,426.60x = 132,639.90 × 70,930.60
  4. Step 4: Simplify right side
    88,426.60x = 9,408,227,690.94
  5. Step 5: Solve for x
    x = 9,408,227,690.94/88,426.60
  6. Step 6: Final answer
    x = 106,395.90

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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.