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Finding the Fourth Proportional to 78,950.92, 108,950.97 and 43,140.16

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Solution

The fourth proportional to 78,950.92, 108,950.97 and 43,140.16 is: 59,532.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,950.92 : 108,950.97 = 43,140.16 : x
  2. Step 2: Convert to fraction form
    78,950.92/108,950.97 = 43,140.16/x
  3. Step 3: Cross multiply
    78,950.92x = 108,950.97 × 43,140.16
  4. Step 4: Simplify right side
    78,950.92x = 4,700,162,277.96
  5. Step 5: Solve for x
    x = 4,700,162,277.96/78,950.92
  6. Step 6: Final answer
    x = 59,532.71

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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.