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Finding the Fourth Proportional to 65,759.80, 90,746.68 and 37,079.20

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Solution

The fourth proportional to 65,759.80, 90,746.68 and 37,079.20 is: 51,168.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,759.80 : 90,746.68 = 37,079.20 : x
  2. Step 2: Convert to fraction form
    65,759.80/90,746.68 = 37,079.20/x
  3. Step 3: Cross multiply
    65,759.80x = 90,746.68 × 37,079.20
  4. Step 4: Simplify right side
    65,759.80x = 3,364,814,297.06
  5. Step 5: Solve for x
    x = 3,364,814,297.06/65,759.80
  6. Step 6: Final answer
    x = 51,168.26

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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.