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Finding the Fourth Proportional to 91,968.80, 137,953.20 and 36,564.80

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Solution

The fourth proportional to 91,968.80, 137,953.20 and 36,564.80 is: 54,847.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,968.80 : 137,953.20 = 36,564.80 : x
  2. Step 2: Convert to fraction form
    91,968.80/137,953.20 = 36,564.80/x
  3. Step 3: Cross multiply
    91,968.80x = 137,953.20 × 36,564.80
  4. Step 4: Simplify right side
    91,968.80x = 5,044,231,167.36
  5. Step 5: Solve for x
    x = 5,044,231,167.36/91,968.80
  6. Step 6: Final answer
    x = 54,847.20

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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.