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Finding the Fourth Proportional to 63,640.88, 87,828.40 and 35,346.50

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Solution

The fourth proportional to 63,640.88, 87,828.40 and 35,346.50 is: 48,780.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,640.88 : 87,828.40 = 35,346.50 : x
  2. Step 2: Convert to fraction form
    63,640.88/87,828.40 = 35,346.50/x
  3. Step 3: Cross multiply
    63,640.88x = 87,828.40 × 35,346.50
  4. Step 4: Simplify right side
    63,640.88x = 3,104,426,540.60
  5. Step 5: Solve for x
    x = 3,104,426,540.60/63,640.88
  6. Step 6: Final answer
    x = 48,780.38

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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.