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Finding the Fourth Proportional to 78,326.96, 108,093.15 and 42,516.92

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Solution

The fourth proportional to 78,326.96, 108,093.15 and 42,516.92 is: 58,674.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,326.96 : 108,093.15 = 42,516.92 : x
  2. Step 2: Convert to fraction form
    78,326.96/108,093.15 = 42,516.92/x
  3. Step 3: Cross multiply
    78,326.96x = 108,093.15 × 42,516.92
  4. Step 4: Simplify right side
    78,326.96x = 4,595,787,270.63
  5. Step 5: Solve for x
    x = 4,595,787,270.63/78,326.96
  6. Step 6: Final answer
    x = 58,674.40

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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.