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Finding the Fourth Proportional to 64,611.20, 96,801.60 and 52,860.80

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Solution

The fourth proportional to 64,611.20, 96,801.60 and 52,860.80 is: 79,196.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,611.20 : 96,801.60 = 52,860.80 : x
  2. Step 2: Convert to fraction form
    64,611.20/96,801.60 = 52,860.80/x
  3. Step 3: Cross multiply
    64,611.20x = 96,801.60 × 52,860.80
  4. Step 4: Simplify right side
    64,611.20x = 5,117,010,017.28
  5. Step 5: Solve for x
    x = 5,117,010,017.28/64,611.20
  6. Step 6: Final answer
    x = 79,196.95

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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.