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Finding the Fourth Proportional to 63,021.68, 86,971.78 and 34,729.20

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Solution

The fourth proportional to 63,021.68, 86,971.78 and 34,729.20 is: 47,927.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,021.68 : 86,971.78 = 34,729.20 : x
  2. Step 2: Convert to fraction form
    63,021.68/86,971.78 = 34,729.20/x
  3. Step 3: Cross multiply
    63,021.68x = 86,971.78 × 34,729.20
  4. Step 4: Simplify right side
    63,021.68x = 3,020,460,341.98
  5. Step 5: Solve for x
    x = 3,020,460,341.98/63,021.68
  6. Step 6: Final answer
    x = 47,927.32

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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.