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Finding the Fourth Proportional to 65,761.61, 90,745.52 and 37,079.64

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Solution

The fourth proportional to 65,761.61, 90,745.52 and 37,079.64 is: 51,166.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,761.61 : 90,745.52 = 37,079.64 : x
  2. Step 2: Convert to fraction form
    65,761.61/90,745.52 = 37,079.64/x
  3. Step 3: Cross multiply
    65,761.61x = 90,745.52 × 37,079.64
  4. Step 4: Simplify right side
    65,761.61x = 3,364,811,027.81
  5. Step 5: Solve for x
    x = 3,364,811,027.81/65,761.61
  6. Step 6: Final answer
    x = 51,166.80

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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.