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Finding the Fourth Proportional to 69,907.78, 96,475.14 and 39,692.10

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Solution

The fourth proportional to 69,907.78, 96,475.14 and 39,692.10 is: 54,776.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,907.78 : 96,475.14 = 39,692.10 : x
  2. Step 2: Convert to fraction form
    69,907.78/96,475.14 = 39,692.10/x
  3. Step 3: Cross multiply
    69,907.78x = 96,475.14 × 39,692.10
  4. Step 4: Simplify right side
    69,907.78x = 3,829,300,904.39
  5. Step 5: Solve for x
    x = 3,829,300,904.39/69,907.78
  6. Step 6: Final answer
    x = 54,776.46

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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.