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Finding the Fourth Proportional to 63,021.19, 86,971.10 and 34,728.70

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Solution

The fourth proportional to 63,021.19, 86,971.10 and 34,728.70 is: 47,926.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,021.19 : 86,971.10 = 34,728.70 : x
  2. Step 2: Convert to fraction form
    63,021.19/86,971.10 = 34,728.70/x
  3. Step 3: Cross multiply
    63,021.19x = 86,971.10 × 34,728.70
  4. Step 4: Simplify right side
    63,021.19x = 3,020,393,240.57
  5. Step 5: Solve for x
    x = 3,020,393,240.57/63,021.19
  6. Step 6: Final answer
    x = 47,926.63

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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.