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Finding the Fourth Proportional to 63,796.80, 88,034.40 and 39,907.20

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Solution

The fourth proportional to 63,796.80, 88,034.40 and 39,907.20 is: 55,068.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,796.80 : 88,034.40 = 39,907.20 : x
  2. Step 2: Convert to fraction form
    63,796.80/88,034.40 = 39,907.20/x
  3. Step 3: Cross multiply
    63,796.80x = 88,034.40 × 39,907.20
  4. Step 4: Simplify right side
    63,796.80x = 3,513,206,407.68
  5. Step 5: Solve for x
    x = 3,513,206,407.68/63,796.80
  6. Step 6: Final answer
    x = 55,068.69

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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.