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Finding the Fourth Proportional to 65,149.45, 89,908.44 and 38,291.58

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Solution

The fourth proportional to 65,149.45, 89,908.44 and 38,291.58 is: 52,843.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,149.45 : 89,908.44 = 38,291.58 : x
  2. Step 2: Convert to fraction form
    65,149.45/89,908.44 = 38,291.58/x
  3. Step 3: Cross multiply
    65,149.45x = 89,908.44 × 38,291.58
  4. Step 4: Simplify right side
    65,149.45x = 3,442,736,222.94
  5. Step 5: Solve for x
    x = 3,442,736,222.94/65,149.45
  6. Step 6: Final answer
    x = 52,843.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.