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Finding the Fourth Proportional to 78,217.92, 107,883.36 and 51,350.62

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Solution

The fourth proportional to 78,217.92, 107,883.36 and 51,350.62 is: 70,826.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,217.92 : 107,883.36 = 51,350.62 : x
  2. Step 2: Convert to fraction form
    78,217.92/107,883.36 = 51,350.62/x
  3. Step 3: Cross multiply
    78,217.92x = 107,883.36 × 51,350.62
  4. Step 4: Simplify right side
    78,217.92x = 5,539,877,423.68
  5. Step 5: Solve for x
    x = 5,539,877,423.68/78,217.92
  6. Step 6: Final answer
    x = 70,826.19

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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.