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Finding the Fourth Proportional to 63,691.84, 87,890.80 and 35,396.64

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Solution

The fourth proportional to 63,691.84, 87,890.80 and 35,396.64 is: 48,845.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,691.84 : 87,890.80 = 35,396.64 : x
  2. Step 2: Convert to fraction form
    63,691.84/87,890.80 = 35,396.64/x
  3. Step 3: Cross multiply
    63,691.84x = 87,890.80 × 35,396.64
  4. Step 4: Simplify right side
    63,691.84x = 3,111,039,006.91
  5. Step 5: Solve for x
    x = 3,111,039,006.91/63,691.84
  6. Step 6: Final answer
    x = 48,845.17

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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.