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Finding the Fourth Proportional to 65,446.77, 90,324.59 and 38,591.67

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Solution

The fourth proportional to 65,446.77, 90,324.59 and 38,591.67 is: 53,261.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,446.77 : 90,324.59 = 38,591.67 : x
  2. Step 2: Convert to fraction form
    65,446.77/90,324.59 = 38,591.67/x
  3. Step 3: Cross multiply
    65,446.77x = 90,324.59 × 38,591.67
  4. Step 4: Simplify right side
    65,446.77x = 3,485,776,770.17
  5. Step 5: Solve for x
    x = 3,485,776,770.17/65,446.77
  6. Step 6: Final answer
    x = 53,261.25

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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.