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Finding the Fourth Proportional to 78,853.89, 108,818.46 and 50,559.57

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Solution

The fourth proportional to 78,853.89, 108,818.46 and 50,559.57 is: 69,772.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,853.89 : 108,818.46 = 50,559.57 : x
  2. Step 2: Convert to fraction form
    78,853.89/108,818.46 = 50,559.57/x
  3. Step 3: Cross multiply
    78,853.89x = 108,818.46 × 50,559.57
  4. Step 4: Simplify right side
    78,853.89x = 5,501,814,545.66
  5. Step 5: Solve for x
    x = 5,501,814,545.66/78,853.89
  6. Step 6: Final answer
    x = 69,772.27

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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.