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Finding the Fourth Proportional to 63,681.80, 87,853.63 and 39,766.96

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Solution

The fourth proportional to 63,681.80, 87,853.63 and 39,766.96 is: 54,861.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,681.80 : 87,853.63 = 39,766.96 : x
  2. Step 2: Convert to fraction form
    63,681.80/87,853.63 = 39,766.96/x
  3. Step 3: Cross multiply
    63,681.80x = 87,853.63 × 39,766.96
  4. Step 4: Simplify right side
    63,681.80x = 3,493,671,151.96
  5. Step 5: Solve for x
    x = 3,493,671,151.96/63,681.80
  6. Step 6: Final answer
    x = 54,861.38

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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.