Home / 72,728,570.97-100,367,559.74-39,690,944.30

Finding the Fourth Proportional to 72,728,570.97, 100,367,559.74 and 39,690,944.30

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Solution

The fourth proportional to 72,728,570.97, 100,367,559.74 and 39,690,944.30 is: 54,774,666.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,728,570.97 : 100,367,559.74 = 39,690,944.30 : x
  2. Step 2: Convert to fraction form
    72,728,570.97/100,367,559.74 = 39,690,944.30/x
  3. Step 3: Cross multiply
    72,728,570.97x = 100,367,559.74 × 39,690,944.30
  4. Step 4: Simplify right side
    72,728,570.97x = 3,983,683,223,517,409
  5. Step 5: Solve for x
    x = 3,983,683,223,517,409/72,728,570.97
  6. Step 6: Final answer
    x = 54,774,666.55

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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.