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Finding the Fourth Proportional to 101,079.79, 139,478.95 and 58,630.12

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Solution

The fourth proportional to 101,079.79, 139,478.95 and 58,630.12 is: 80,903.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,079.79 : 139,478.95 = 58,630.12 : x
  2. Step 2: Convert to fraction form
    101,079.79/139,478.95 = 58,630.12/x
  3. Step 3: Cross multiply
    101,079.79x = 139,478.95 × 58,630.12
  4. Step 4: Simplify right side
    101,079.79x = 8,177,667,575.97
  5. Step 5: Solve for x
    x = 8,177,667,575.97/101,079.79
  6. Step 6: Final answer
    x = 80,903.09

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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.