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Finding the Fourth Proportional to 79,696.48, 109,981.46 and 47,865.92

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Solution

The fourth proportional to 79,696.48, 109,981.46 and 47,865.92 is: 66,055.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,696.48 : 109,981.46 = 47,865.92 : x
  2. Step 2: Convert to fraction form
    79,696.48/109,981.46 = 47,865.92/x
  3. Step 3: Cross multiply
    79,696.48x = 109,981.46 × 47,865.92
  4. Step 4: Simplify right side
    79,696.48x = 5,264,363,765.84
  5. Step 5: Solve for x
    x = 5,264,363,765.84/79,696.48
  6. Step 6: Final answer
    x = 66,055.16

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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.