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Finding the Fourth Proportional to 89,638.45, 134,282.71 and 69,824.23

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Solution

The fourth proportional to 89,638.45, 134,282.71 and 69,824.23 is: 104,600.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,638.45 : 134,282.71 = 69,824.23 : x
  2. Step 2: Convert to fraction form
    89,638.45/134,282.71 = 69,824.23/x
  3. Step 3: Cross multiply
    89,638.45x = 134,282.71 × 69,824.23
  4. Step 4: Simplify right side
    89,638.45x = 9,376,186,579.64
  5. Step 5: Solve for x
    x = 9,376,186,579.64/89,638.45
  6. Step 6: Final answer
    x = 104,600.06

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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.