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Finding the Fourth Proportional to 65,671.16, 90,629.70 and 37,385.96

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Solution

The fourth proportional to 65,671.16, 90,629.70 and 37,385.96 is: 51,594.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,671.16 : 90,629.70 = 37,385.96 : x
  2. Step 2: Convert to fraction form
    65,671.16/90,629.70 = 37,385.96/x
  3. Step 3: Cross multiply
    65,671.16x = 90,629.70 × 37,385.96
  4. Step 4: Simplify right side
    65,671.16x = 3,388,278,339.01
  5. Step 5: Solve for x
    x = 3,388,278,339.01/65,671.16
  6. Step 6: Final answer
    x = 51,594.62

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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.