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Finding the Fourth Proportional to 63,698.50, 87,909.40 and 35,409.66

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Solution

The fourth proportional to 63,698.50, 87,909.40 and 35,409.66 is: 48,868.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,698.50 : 87,909.40 = 35,409.66 : x
  2. Step 2: Convert to fraction form
    63,698.50/87,909.40 = 35,409.66/x
  3. Step 3: Cross multiply
    63,698.50x = 87,909.40 × 35,409.66
  4. Step 4: Simplify right side
    63,698.50x = 3,112,841,964.80
  5. Step 5: Solve for x
    x = 3,112,841,964.80/63,698.50
  6. Step 6: Final answer
    x = 48,868.37

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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.