Home / 72,697,743.17-100,322,747.96-39,657,983.57

Finding the Fourth Proportional to 72,697,743.17, 100,322,747.96 and 39,657,983.57

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Solution

The fourth proportional to 72,697,743.17, 100,322,747.96 and 39,657,983.57 is: 54,727,942.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,697,743.17 : 100,322,747.96 = 39,657,983.57 : x
  2. Step 2: Convert to fraction form
    72,697,743.17/100,322,747.96 = 39,657,983.57/x
  3. Step 3: Cross multiply
    72,697,743.17x = 100,322,747.96 × 39,657,983.57
  4. Step 4: Simplify right side
    72,697,743.17x = 3,978,597,889,793,317
  5. Step 5: Solve for x
    x = 3,978,597,889,793,317/72,697,743.17
  6. Step 6: Final answer
    x = 54,727,942.25

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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.