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Finding the Fourth Proportional to 65,755.38, 90,746.07 and 37,455.66

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Solution

The fourth proportional to 65,755.38, 90,746.07 and 37,455.66 is: 51,690.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,755.38 : 90,746.07 = 37,455.66 : x
  2. Step 2: Convert to fraction form
    65,755.38/90,746.07 = 37,455.66/x
  3. Step 3: Cross multiply
    65,755.38x = 90,746.07 × 37,455.66
  4. Step 4: Simplify right side
    65,755.38x = 3,398,953,944.26
  5. Step 5: Solve for x
    x = 3,398,953,944.26/65,755.38
  6. Step 6: Final answer
    x = 51,690.89

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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.