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Finding the Fourth Proportional to 63,702.84, 87,912.90 and 35,409

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Solution

The fourth proportional to 63,702.84, 87,912.90 and 35,409 is: 48,866.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,702.84 : 87,912.90 = 35,409 : x
  2. Step 2: Convert to fraction form
    63,702.84/87,912.90 = 35,409/x
  3. Step 3: Cross multiply
    63,702.84x = 87,912.90 × 35,409
  4. Step 4: Simplify right side
    63,702.84x = 3,112,907,876.10
  5. Step 5: Solve for x
    x = 3,112,907,876.10/63,702.84
  6. Step 6: Final answer
    x = 48,866.08

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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.