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Finding the Fourth Proportional to 77,863.92, 107,460.18 and 47,669.22

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Solution

The fourth proportional to 77,863.92, 107,460.18 and 47,669.22 is: 65,788.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,863.92 : 107,460.18 = 47,669.22 : x
  2. Step 2: Convert to fraction form
    77,863.92/107,460.18 = 47,669.22/x
  3. Step 3: Cross multiply
    77,863.92x = 107,460.18 × 47,669.22
  4. Step 4: Simplify right side
    77,863.92x = 5,122,542,961.66
  5. Step 5: Solve for x
    x = 5,122,542,961.66/77,863.92
  6. Step 6: Final answer
    x = 65,788.40

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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.