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Finding the Fourth Proportional to 63,078.80, 94,493.40 and 40,907.60

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Solution

The fourth proportional to 63,078.80, 94,493.40 and 40,907.60 is: 61,280.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,078.80 : 94,493.40 = 40,907.60 : x
  2. Step 2: Convert to fraction form
    63,078.80/94,493.40 = 40,907.60/x
  3. Step 3: Cross multiply
    63,078.80x = 94,493.40 × 40,907.60
  4. Step 4: Simplify right side
    63,078.80x = 3,865,498,209.84
  5. Step 5: Solve for x
    x = 3,865,498,209.84/63,078.80
  6. Step 6: Final answer
    x = 61,280.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.