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Finding the Fourth Proportional to 79,838.38, 119,518.32 and 76,999.46

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Solution

The fourth proportional to 79,838.38, 119,518.32 and 76,999.46 is: 115,268.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,838.38 : 119,518.32 = 76,999.46 : x
  2. Step 2: Convert to fraction form
    79,838.38/119,518.32 = 76,999.46/x
  3. Step 3: Cross multiply
    79,838.38x = 119,518.32 × 76,999.46
  4. Step 4: Simplify right side
    79,838.38x = 9,202,845,715.11
  5. Step 5: Solve for x
    x = 9,202,845,715.11/79,838.38
  6. Step 6: Final answer
    x = 115,268.45

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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.