Home / 72,809,436.64-100,476,358.68-39,769,680.48

Finding the Fourth Proportional to 72,809,436.64, 100,476,358.68 and 39,769,680.48

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Solution

The fourth proportional to 72,809,436.64, 100,476,358.68 and 39,769,680.48 is: 54,881,796.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,809,436.64 : 100,476,358.68 = 39,769,680.48 : x
  2. Step 2: Convert to fraction form
    72,809,436.64/100,476,358.68 = 39,769,680.48/x
  3. Step 3: Cross multiply
    72,809,436.64x = 100,476,358.68 × 39,769,680.48
  4. Step 4: Simplify right side
    72,809,436.64x = 3,995,912,680,497,474.50
  5. Step 5: Solve for x
    x = 3,995,912,680,497,474.50/72,809,436.64
  6. Step 6: Final answer
    x = 54,881,796.44

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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.