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Finding the Fourth Proportional to 60,698.34, 91,051.32 and 18,579.78

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Solution

The fourth proportional to 60,698.34, 91,051.32 and 18,579.78 is: 27,870.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,698.34 : 91,051.32 = 18,579.78 : x
  2. Step 2: Convert to fraction form
    60,698.34/91,051.32 = 18,579.78/x
  3. Step 3: Cross multiply
    60,698.34x = 91,051.32 × 18,579.78
  4. Step 4: Simplify right side
    60,698.34x = 1,691,713,494.31
  5. Step 5: Solve for x
    x = 1,691,713,494.31/60,698.34
  6. Step 6: Final answer
    x = 27,870.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.