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Finding the Fourth Proportional to 63,990.36, 88,290.50 and 38,488.52

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Solution

The fourth proportional to 63,990.36, 88,290.50 and 38,488.52 is: 53,104.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,990.36 : 88,290.50 = 38,488.52 : x
  2. Step 2: Convert to fraction form
    63,990.36/88,290.50 = 38,488.52/x
  3. Step 3: Cross multiply
    63,990.36x = 88,290.50 × 38,488.52
  4. Step 4: Simplify right side
    63,990.36x = 3,398,170,675.06
  5. Step 5: Solve for x
    x = 3,398,170,675.06/63,990.36
  6. Step 6: Final answer
    x = 53,104.42

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1.5x scale

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.