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Finding the Fourth Proportional to 62,981.82, 86,908.48 and 38,778.94

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Solution

The fourth proportional to 62,981.82, 86,908.48 and 38,778.94 is: 53,510.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,981.82 : 86,908.48 = 38,778.94 : x
  2. Step 2: Convert to fraction form
    62,981.82/86,908.48 = 38,778.94/x
  3. Step 3: Cross multiply
    62,981.82x = 86,908.48 × 38,778.94
  4. Step 4: Simplify right side
    62,981.82x = 3,370,218,731.41
  5. Step 5: Solve for x
    x = 3,370,218,731.41/62,981.82
  6. Step 6: Final answer
    x = 53,510.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.