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Finding the Fourth Proportional to 64,648.20, 89,219.70 and 36,352.20

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Solution

The fourth proportional to 64,648.20, 89,219.70 and 36,352.20 is: 50,168.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,648.20 : 89,219.70 = 36,352.20 : x
  2. Step 2: Convert to fraction form
    64,648.20/89,219.70 = 36,352.20/x
  3. Step 3: Cross multiply
    64,648.20x = 89,219.70 × 36,352.20
  4. Step 4: Simplify right side
    64,648.20x = 3,243,332,378.34
  5. Step 5: Solve for x
    x = 3,243,332,378.34/64,648.20
  6. Step 6: Final answer
    x = 50,168.95

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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.