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Finding the Fourth Proportional to 63,668.64, 87,889.65 and 42,976.62

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Solution

The fourth proportional to 63,668.64, 87,889.65 and 42,976.62 is: 59,325.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,668.64 : 87,889.65 = 42,976.62 : x
  2. Step 2: Convert to fraction form
    63,668.64/87,889.65 = 42,976.62/x
  3. Step 3: Cross multiply
    63,668.64x = 87,889.65 × 42,976.62
  4. Step 4: Simplify right side
    63,668.64x = 3,777,200,089.98
  5. Step 5: Solve for x
    x = 3,777,200,089.98/63,668.64
  6. Step 6: Final answer
    x = 59,325.91

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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.