Home / 77,638.52-107,144.96-43,657.70

Finding the Fourth Proportional to 77,638.52, 107,144.96 and 43,657.70

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Solution

The fourth proportional to 77,638.52, 107,144.96 and 43,657.70 is: 60,249.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,638.52 : 107,144.96 = 43,657.70 : x
  2. Step 2: Convert to fraction form
    77,638.52/107,144.96 = 43,657.70/x
  3. Step 3: Cross multiply
    77,638.52x = 107,144.96 × 43,657.70
  4. Step 4: Simplify right side
    77,638.52x = 4,677,702,569.77
  5. Step 5: Solve for x
    x = 4,677,702,569.77/77,638.52
  6. Step 6: Final answer
    x = 60,249.77

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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.