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Finding the Fourth Proportional to 65,203.70, 90,002.49 and 38,344.91

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Solution

The fourth proportional to 65,203.70, 90,002.49 and 38,344.91 is: 52,928.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,203.70 : 90,002.49 = 38,344.91 : x
  2. Step 2: Convert to fraction form
    65,203.70/90,002.49 = 38,344.91/x
  3. Step 3: Cross multiply
    65,203.70x = 90,002.49 × 38,344.91
  4. Step 4: Simplify right side
    65,203.70x = 3,451,137,378.83
  5. Step 5: Solve for x
    x = 3,451,137,378.83/65,203.70
  6. Step 6: Final answer
    x = 52,928.55

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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.