Home / 65,385.28-90,234.69-36,313.78

Finding the Fourth Proportional to 65,385.28, 90,234.69 and 36,313.78

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Solution

The fourth proportional to 65,385.28, 90,234.69 and 36,313.78 is: 50,114.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,385.28 : 90,234.69 = 36,313.78 : x
  2. Step 2: Convert to fraction form
    65,385.28/90,234.69 = 36,313.78/x
  3. Step 3: Cross multiply
    65,385.28x = 90,234.69 × 36,313.78
  4. Step 4: Simplify right side
    65,385.28x = 3,276,762,681.03
  5. Step 5: Solve for x
    x = 3,276,762,681.03/65,385.28
  6. Step 6: Final answer
    x = 50,114.68

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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.