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Finding the Fourth Proportional to 62,881.20, 94,321.80 and 18,509.40

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Solution

The fourth proportional to 62,881.20, 94,321.80 and 18,509.40 is: 27,764.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,881.20 : 94,321.80 = 18,509.40 : x
  2. Step 2: Convert to fraction form
    62,881.20/94,321.80 = 18,509.40/x
  3. Step 3: Cross multiply
    62,881.20x = 94,321.80 × 18,509.40
  4. Step 4: Simplify right side
    62,881.20x = 1,745,839,924.92
  5. Step 5: Solve for x
    x = 1,745,839,924.92/62,881.20
  6. Step 6: Final answer
    x = 27,764.10

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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.