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Finding the Fourth Proportional to 89,720.90, 134,557.05 and 26,540.90

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Solution

The fourth proportional to 89,720.90, 134,557.05 and 26,540.90 is: 39,804.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,720.90 : 134,557.05 = 26,540.90 : x
  2. Step 2: Convert to fraction form
    89,720.90/134,557.05 = 26,540.90/x
  3. Step 3: Cross multiply
    89,720.90x = 134,557.05 × 26,540.90
  4. Step 4: Simplify right side
    89,720.90x = 3,571,265,208.35
  5. Step 5: Solve for x
    x = 3,571,265,208.35/89,720.90
  6. Step 6: Final answer
    x = 39,804.16

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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.