Home / 78,358.59-108,181.00-47,743.23

Finding the Fourth Proportional to 78,358.59, 108,181.00 and 47,743.23

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Solution

The fourth proportional to 78,358.59, 108,181.00 and 47,743.23 is: 65,913.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,358.59 : 108,181.00 = 47,743.23 : x
  2. Step 2: Convert to fraction form
    78,358.59/108,181.00 = 47,743.23/x
  3. Step 3: Cross multiply
    78,358.59x = 108,181.00 × 47,743.23
  4. Step 4: Simplify right side
    78,358.59x = 5,164,910,125.91
  5. Step 5: Solve for x
    x = 5,164,910,125.91/78,358.59
  6. Step 6: Final answer
    x = 65,913.77

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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.