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Finding the Fourth Proportional to 63,710.80, 87,933.09 and 42,200.80

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Solution

The fourth proportional to 63,710.80, 87,933.09 and 42,200.80 is: 58,245.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,710.80 : 87,933.09 = 42,200.80 : x
  2. Step 2: Convert to fraction form
    63,710.80/87,933.09 = 42,200.80/x
  3. Step 3: Cross multiply
    63,710.80x = 87,933.09 × 42,200.80
  4. Step 4: Simplify right side
    63,710.80x = 3,710,846,744.47
  5. Step 5: Solve for x
    x = 3,710,846,744.47/63,710.80
  6. Step 6: Final answer
    x = 58,245.18

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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.