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Finding the Fourth Proportional to 97,478.60, 134,583.02 and 79,616.48

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Solution

The fourth proportional to 97,478.60, 134,583.02 and 79,616.48 is: 109,921.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,478.60 : 134,583.02 = 79,616.48 : x
  2. Step 2: Convert to fraction form
    97,478.60/134,583.02 = 79,616.48/x
  3. Step 3: Cross multiply
    97,478.60x = 134,583.02 × 79,616.48
  4. Step 4: Simplify right side
    97,478.60x = 10,715,026,320.17
  5. Step 5: Solve for x
    x = 10,715,026,320.17/97,478.60
  6. Step 6: Final answer
    x = 109,921.83

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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.