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Finding the Fourth Proportional to 63,668.94, 87,894.30 and 39,803.31

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Solution

The fourth proportional to 63,668.94, 87,894.30 and 39,803.31 is: 54,948.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,668.94 : 87,894.30 = 39,803.31 : x
  2. Step 2: Convert to fraction form
    63,668.94/87,894.30 = 39,803.31/x
  3. Step 3: Cross multiply
    63,668.94x = 87,894.30 × 39,803.31
  4. Step 4: Simplify right side
    63,668.94x = 3,498,484,070.13
  5. Step 5: Solve for x
    x = 3,498,484,070.13/63,668.94
  6. Step 6: Final answer
    x = 54,948.05

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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.