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Finding the Fourth Proportional to 78,545.84, 108,292.82 and 50,901.62

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Solution

The fourth proportional to 78,545.84, 108,292.82 and 50,901.62 is: 70,179.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,545.84 : 108,292.82 = 50,901.62 : x
  2. Step 2: Convert to fraction form
    78,545.84/108,292.82 = 50,901.62/x
  3. Step 3: Cross multiply
    78,545.84x = 108,292.82 × 50,901.62
  4. Step 4: Simplify right side
    78,545.84x = 5,512,279,972.37
  5. Step 5: Solve for x
    x = 5,512,279,972.37/78,545.84
  6. Step 6: Final answer
    x = 70,179.15

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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.