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Finding the Fourth Proportional to 79,663.80, 119,512.08 and 66,607.41

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Solution

The fourth proportional to 79,663.80, 119,512.08 and 66,607.41 is: 99,924.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,663.80 : 119,512.08 = 66,607.41 : x
  2. Step 2: Convert to fraction form
    79,663.80/119,512.08 = 66,607.41/x
  3. Step 3: Cross multiply
    79,663.80x = 119,512.08 × 66,607.41
  4. Step 4: Simplify right side
    79,663.80x = 7,960,390,112.51
  5. Step 5: Solve for x
    x = 7,960,390,112.51/79,663.80
  6. Step 6: Final answer
    x = 99,924.81

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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.