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Finding the Fourth Proportional to 63,699.62, 87,704.70 and 57,794.72

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Solution

The fourth proportional to 63,699.62, 87,704.70 and 57,794.72 is: 79,574.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,699.62 : 87,704.70 = 57,794.72 : x
  2. Step 2: Convert to fraction form
    63,699.62/87,704.70 = 57,794.72/x
  3. Step 3: Cross multiply
    63,699.62x = 87,704.70 × 57,794.72
  4. Step 4: Simplify right side
    63,699.62x = 5,068,868,579.18
  5. Step 5: Solve for x
    x = 5,068,868,579.18/63,699.62
  6. Step 6: Final answer
    x = 79,574.55

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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.