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Finding the Fourth Proportional to 101,079.29, 139,478.27 and 58,629.62

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Solution

The fourth proportional to 101,079.29, 139,478.27 and 58,629.62 is: 80,902.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,079.29 : 139,478.27 = 58,629.62 : x
  2. Step 2: Convert to fraction form
    101,079.29/139,478.27 = 58,629.62/x
  3. Step 3: Cross multiply
    101,079.29x = 139,478.27 × 58,629.62
  4. Step 4: Simplify right side
    101,079.29x = 8,177,556,977.82
  5. Step 5: Solve for x
    x = 8,177,556,977.82/101,079.29
  6. Step 6: Final answer
    x = 80,902.40

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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.