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Finding the Fourth Proportional to 66,134.84, 99,337.86 and 43,678.58

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Solution

The fourth proportional to 66,134.84, 99,337.86 and 43,678.58 is: 65,607.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,134.84 : 99,337.86 = 43,678.58 : x
  2. Step 2: Convert to fraction form
    66,134.84/99,337.86 = 43,678.58/x
  3. Step 3: Cross multiply
    66,134.84x = 99,337.86 × 43,678.58
  4. Step 4: Simplify right side
    66,134.84x = 4,338,936,168.35
  5. Step 5: Solve for x
    x = 4,338,936,168.35/66,134.84
  6. Step 6: Final answer
    x = 65,607.42

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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.