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Finding the Fourth Proportional to 101,078.79, 139,477.57 and 58,629.12

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Solution

The fourth proportional to 101,078.79, 139,477.57 and 58,629.12 is: 80,901.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,078.79 : 139,477.57 = 58,629.12 : x
  2. Step 2: Convert to fraction form
    101,078.79/139,477.57 = 58,629.12/x
  3. Step 3: Cross multiply
    101,078.79x = 139,477.57 × 58,629.12
  4. Step 4: Simplify right side
    101,078.79x = 8,177,447,188.84
  5. Step 5: Solve for x
    x = 8,177,447,188.84/101,078.79
  6. Step 6: Final answer
    x = 80,901.71

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1.5x scale

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.