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Finding the Fourth Proportional to 62,991, 94,501.08 and 21,438

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Solution

The fourth proportional to 62,991, 94,501.08 and 21,438 is: 32,161.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,991 : 94,501.08 = 21,438 : x
  2. Step 2: Convert to fraction form
    62,991/94,501.08 = 21,438/x
  3. Step 3: Cross multiply
    62,991x = 94,501.08 × 21,438
  4. Step 4: Simplify right side
    62,991x = 2,025,914,153.04
  5. Step 5: Solve for x
    x = 2,025,914,153.04/62,991
  6. Step 6: Final answer
    x = 32,161.96

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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.