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Finding the Fourth Proportional to 63,687.72, 87,888.42 and 35,392.80

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Solution

The fourth proportional to 63,687.72, 87,888.42 and 35,392.80 is: 48,841.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,687.72 : 87,888.42 = 35,392.80 : x
  2. Step 2: Convert to fraction form
    63,687.72/87,888.42 = 35,392.80/x
  3. Step 3: Cross multiply
    63,687.72x = 87,888.42 × 35,392.80
  4. Step 4: Simplify right side
    63,687.72x = 3,110,617,271.38
  5. Step 5: Solve for x
    x = 3,110,617,271.38/63,687.72
  6. Step 6: Final answer
    x = 48,841.71

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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.