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Finding the Fourth Proportional to 89,620.84, 134,411.10 and 26,427.40

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Solution

The fourth proportional to 89,620.84, 134,411.10 and 26,427.40 is: 39,635.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,620.84 : 134,411.10 = 26,427.40 : x
  2. Step 2: Convert to fraction form
    89,620.84/134,411.10 = 26,427.40/x
  3. Step 3: Cross multiply
    89,620.84x = 134,411.10 × 26,427.40
  4. Step 4: Simplify right side
    89,620.84x = 3,552,135,904.14
  5. Step 5: Solve for x
    x = 3,552,135,904.14/89,620.84
  6. Step 6: Final answer
    x = 39,635.16

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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.