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Finding the Fourth Proportional to 51,565.60, 77,175.60 and 45,344.80

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Solution

The fourth proportional to 51,565.60, 77,175.60 and 45,344.80 is: 67,865.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,565.60 : 77,175.60 = 45,344.80 : x
  2. Step 2: Convert to fraction form
    51,565.60/77,175.60 = 45,344.80/x
  3. Step 3: Cross multiply
    51,565.60x = 77,175.60 × 45,344.80
  4. Step 4: Simplify right side
    51,565.60x = 3,499,512,146.88
  5. Step 5: Solve for x
    x = 3,499,512,146.88/51,565.60
  6. Step 6: Final answer
    x = 67,865.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.