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Finding the Fourth Proportional to 77,888.49, 107,491.79 and 43,435.56

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Solution

The fourth proportional to 77,888.49, 107,491.79 and 43,435.56 is: 59,944.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,888.49 : 107,491.79 = 43,435.56 : x
  2. Step 2: Convert to fraction form
    77,888.49/107,491.79 = 43,435.56/x
  3. Step 3: Cross multiply
    77,888.49x = 107,491.79 × 43,435.56
  4. Step 4: Simplify right side
    77,888.49x = 4,668,965,876.87
  5. Step 5: Solve for x
    x = 4,668,965,876.87/77,888.49
  6. Step 6: Final answer
    x = 59,944.23

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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.