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Finding the Fourth Proportional to 89,353.68, 133,826.36 and 42,639.36

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Solution

The fourth proportional to 89,353.68, 133,826.36 and 42,639.36 is: 63,861.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,353.68 : 133,826.36 = 42,639.36 : x
  2. Step 2: Convert to fraction form
    89,353.68/133,826.36 = 42,639.36/x
  3. Step 3: Cross multiply
    89,353.68x = 133,826.36 × 42,639.36
  4. Step 4: Simplify right side
    89,353.68x = 5,706,270,341.53
  5. Step 5: Solve for x
    x = 5,706,270,341.53/89,353.68
  6. Step 6: Final answer
    x = 63,861.62

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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.