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Finding the Fourth Proportional to 79,394.92, 109,573.71 and 45,406.57

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Solution

The fourth proportional to 79,394.92, 109,573.71 and 45,406.57 is: 62,666.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,394.92 : 109,573.71 = 45,406.57 : x
  2. Step 2: Convert to fraction form
    79,394.92/109,573.71 = 45,406.57/x
  3. Step 3: Cross multiply
    79,394.92x = 109,573.71 × 45,406.57
  4. Step 4: Simplify right side
    79,394.92x = 4,975,366,333.27
  5. Step 5: Solve for x
    x = 4,975,366,333.27/79,394.92
  6. Step 6: Final answer
    x = 62,666.05

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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.