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Finding the Fourth Proportional to 63,911.80, 95,866.80 and 28,851.40

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Solution

The fourth proportional to 63,911.80, 95,866.80 and 28,851.40 is: 43,276.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,911.80 : 95,866.80 = 28,851.40 : x
  2. Step 2: Convert to fraction form
    63,911.80/95,866.80 = 28,851.40/x
  3. Step 3: Cross multiply
    63,911.80x = 95,866.80 × 28,851.40
  4. Step 4: Simplify right side
    63,911.80x = 2,765,891,393.52
  5. Step 5: Solve for x
    x = 2,765,891,393.52/63,911.80
  6. Step 6: Final answer
    x = 43,276.69

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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.