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Finding the Fourth Proportional to 63,686.64, 87,890.76 and 35,394.96

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Solution

The fourth proportional to 63,686.64, 87,890.76 and 35,394.96 is: 48,846.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,686.64 : 87,890.76 = 35,394.96 : x
  2. Step 2: Convert to fraction form
    63,686.64/87,890.76 = 35,394.96/x
  3. Step 3: Cross multiply
    63,686.64x = 87,890.76 × 35,394.96
  4. Step 4: Simplify right side
    63,686.64x = 3,110,889,934.57
  5. Step 5: Solve for x
    x = 3,110,889,934.57/63,686.64
  6. Step 6: Final answer
    x = 48,846.82

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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.