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Finding the Fourth Proportional to 63,907.80, 95,789.70 and 30,643.80

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Solution

The fourth proportional to 63,907.80, 95,789.70 and 30,643.80 is: 45,931.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,907.80 : 95,789.70 = 30,643.80 : x
  2. Step 2: Convert to fraction form
    63,907.80/95,789.70 = 30,643.80/x
  3. Step 3: Cross multiply
    63,907.80x = 95,789.70 × 30,643.80
  4. Step 4: Simplify right side
    63,907.80x = 2,935,360,408.86
  5. Step 5: Solve for x
    x = 2,935,360,408.86/63,907.80
  6. Step 6: Final answer
    x = 45,931.18

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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.