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Finding the Fourth Proportional to 65,749.92, 90,619.92 and 47,600.16

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Solution

The fourth proportional to 65,749.92, 90,619.92 and 47,600.16 is: 65,604.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,749.92 : 90,619.92 = 47,600.16 : x
  2. Step 2: Convert to fraction form
    65,749.92/90,619.92 = 47,600.16/x
  3. Step 3: Cross multiply
    65,749.92x = 90,619.92 × 47,600.16
  4. Step 4: Simplify right side
    65,749.92x = 4,313,522,691.19
  5. Step 5: Solve for x
    x = 4,313,522,691.19/65,749.92
  6. Step 6: Final answer
    x = 65,604.99

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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.