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Finding the Fourth Proportional to 65,761.89, 90,729.63 and 37,077.96

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Solution

The fourth proportional to 65,761.89, 90,729.63 and 37,077.96 is: 51,155.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,761.89 : 90,729.63 = 37,077.96 : x
  2. Step 2: Convert to fraction form
    65,761.89/90,729.63 = 37,077.96/x
  3. Step 3: Cross multiply
    65,761.89x = 90,729.63 × 37,077.96
  4. Step 4: Simplify right side
    65,761.89x = 3,364,069,591.95
  5. Step 5: Solve for x
    x = 3,364,069,591.95/65,761.89
  6. Step 6: Final answer
    x = 51,155.31

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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.