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Finding the Fourth Proportional to 77,273.01, 115,909.52 and 42,193.53

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Solution

The fourth proportional to 77,273.01, 115,909.52 and 42,193.53 is: 63,290.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,273.01 : 115,909.52 = 42,193.53 : x
  2. Step 2: Convert to fraction form
    77,273.01/115,909.52 = 42,193.53/x
  3. Step 3: Cross multiply
    77,273.01x = 115,909.52 × 42,193.53
  4. Step 4: Simplify right side
    77,273.01x = 4,890,631,598.44
  5. Step 5: Solve for x
    x = 4,890,631,598.44/77,273.01
  6. Step 6: Final answer
    x = 63,290.30

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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.