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Finding the Fourth Proportional to 79,348.66, 109,501.28 and 43,538.94

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Solution

The fourth proportional to 79,348.66, 109,501.28 and 43,538.94 is: 60,083.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,348.66 : 109,501.28 = 43,538.94 : x
  2. Step 2: Convert to fraction form
    79,348.66/109,501.28 = 43,538.94/x
  3. Step 3: Cross multiply
    79,348.66x = 109,501.28 × 43,538.94
  4. Step 4: Simplify right side
    79,348.66x = 4,767,569,768.69
  5. Step 5: Solve for x
    x = 4,767,569,768.69/79,348.66
  6. Step 6: Final answer
    x = 60,083.81

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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.