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Finding the Fourth Proportional to 63,678.18, 87,848.62 and 39,763.33

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Solution

The fourth proportional to 63,678.18, 87,848.62 and 39,763.33 is: 54,856.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,678.18 : 87,848.62 = 39,763.33 : x
  2. Step 2: Convert to fraction form
    63,678.18/87,848.62 = 39,763.33/x
  3. Step 3: Cross multiply
    63,678.18x = 87,848.62 × 39,763.33
  4. Step 4: Simplify right side
    63,678.18x = 3,493,153,667.10
  5. Step 5: Solve for x
    x = 3,493,153,667.10/63,678.18
  6. Step 6: Final answer
    x = 54,856.37

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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.