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Finding the Fourth Proportional to 65,173.37, 89,931.34 and 36,490.78

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Solution

The fourth proportional to 65,173.37, 89,931.34 and 36,490.78 is: 50,352.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,173.37 : 89,931.34 = 36,490.78 : x
  2. Step 2: Convert to fraction form
    65,173.37/89,931.34 = 36,490.78/x
  3. Step 3: Cross multiply
    65,173.37x = 89,931.34 × 36,490.78
  4. Step 4: Simplify right side
    65,173.37x = 3,281,664,426.99
  5. Step 5: Solve for x
    x = 3,281,664,426.99/65,173.37
  6. Step 6: Final answer
    x = 50,352.85

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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.