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Finding the Fourth Proportional to 89,604.60, 134,277.30 and 39,643.80

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Solution

The fourth proportional to 89,604.60, 134,277.30 and 39,643.80 is: 59,408.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,604.60 : 134,277.30 = 39,643.80 : x
  2. Step 2: Convert to fraction form
    89,604.60/134,277.30 = 39,643.80/x
  3. Step 3: Cross multiply
    89,604.60x = 134,277.30 × 39,643.80
  4. Step 4: Simplify right side
    89,604.60x = 5,323,262,425.74
  5. Step 5: Solve for x
    x = 5,323,262,425.74/89,604.60
  6. Step 6: Final answer
    x = 59,408.36

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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.