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Finding the Fourth Proportional to 62,880.60, 94,320.90 and 21,327.96

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Solution

The fourth proportional to 62,880.60, 94,320.90 and 21,327.96 is: 31,991.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,880.60 : 94,320.90 = 21,327.96 : x
  2. Step 2: Convert to fraction form
    62,880.60/94,320.90 = 21,327.96/x
  3. Step 3: Cross multiply
    62,880.60x = 94,320.90 × 21,327.96
  4. Step 4: Simplify right side
    62,880.60x = 2,011,672,382.36
  5. Step 5: Solve for x
    x = 2,011,672,382.36/62,880.60
  6. Step 6: Final answer
    x = 31,991.94

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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.