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Finding the Fourth Proportional to 78,958.92, 108,966.24 and 43,151.34

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Solution

The fourth proportional to 78,958.92, 108,966.24 and 43,151.34 is: 59,550.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,958.92 : 108,966.24 = 43,151.34 : x
  2. Step 2: Convert to fraction form
    78,958.92/108,966.24 = 43,151.34/x
  3. Step 3: Cross multiply
    78,958.92x = 108,966.24 × 43,151.34
  4. Step 4: Simplify right side
    78,958.92x = 4,702,039,270.76
  5. Step 5: Solve for x
    x = 4,702,039,270.76/78,958.92
  6. Step 6: Final answer
    x = 59,550.45

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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.