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Finding the Fourth Proportional to 65,456.84, 90,329.83 and 36,384.45

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Solution

The fourth proportional to 65,456.84, 90,329.83 and 36,384.45 is: 50,210.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,456.84 : 90,329.83 = 36,384.45 : x
  2. Step 2: Convert to fraction form
    65,456.84/90,329.83 = 36,384.45/x
  3. Step 3: Cross multiply
    65,456.84x = 90,329.83 × 36,384.45
  4. Step 4: Simplify right side
    65,456.84x = 3,286,601,183.14
  5. Step 5: Solve for x
    x = 3,286,601,183.14/65,456.84
  6. Step 6: Final answer
    x = 50,210.20

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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.