Home / 65,731.56-90,785-47,906.16

Finding the Fourth Proportional to 65,731.56, 90,785 and 47,906.16

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Solution

The fourth proportional to 65,731.56, 90,785 and 47,906.16 is: 66,165.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,731.56 : 90,785 = 47,906.16 : x
  2. Step 2: Convert to fraction form
    65,731.56/90,785 = 47,906.16/x
  3. Step 3: Cross multiply
    65,731.56x = 90,785 × 47,906.16
  4. Step 4: Simplify right side
    65,731.56x = 4,349,160,735.60
  5. Step 5: Solve for x
    x = 4,349,160,735.60/65,731.56
  6. Step 6: Final answer
    x = 66,165.49

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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.