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Finding the Fourth Proportional to 66,137.71, 99,220.94 and 21,762.27

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Solution

The fourth proportional to 66,137.71, 99,220.94 and 21,762.27 is: 32,648.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,137.71 : 99,220.94 = 21,762.27 : x
  2. Step 2: Convert to fraction form
    66,137.71/99,220.94 = 21,762.27/x
  3. Step 3: Cross multiply
    66,137.71x = 99,220.94 × 21,762.27
  4. Step 4: Simplify right side
    66,137.71x = 2,159,272,885.93
  5. Step 5: Solve for x
    x = 2,159,272,885.93/66,137.71
  6. Step 6: Final answer
    x = 32,648.14

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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.