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Finding the Fourth Proportional to 63,154.81, 87,154.35 and 34,860.49

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Solution

The fourth proportional to 63,154.81, 87,154.35 and 34,860.49 is: 48,107.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,154.81 : 87,154.35 = 34,860.49 : x
  2. Step 2: Convert to fraction form
    63,154.81/87,154.35 = 34,860.49/x
  3. Step 3: Cross multiply
    63,154.81x = 87,154.35 × 34,860.49
  4. Step 4: Simplify right side
    63,154.81x = 3,038,242,736.56
  5. Step 5: Solve for x
    x = 3,038,242,736.56/63,154.81
  6. Step 6: Final answer
    x = 48,107.86

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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.