Home / 72,728,572.47-100,367,561.81-39,690,945.80

Finding the Fourth Proportional to 72,728,572.47, 100,367,561.81 and 39,690,945.80

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Solution

The fourth proportional to 72,728,572.47, 100,367,561.81 and 39,690,945.80 is: 54,774,668.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,728,572.47 : 100,367,561.81 = 39,690,945.80 : x
  2. Step 2: Convert to fraction form
    72,728,572.47/100,367,561.81 = 39,690,945.80/x
  3. Step 3: Cross multiply
    72,728,572.47x = 100,367,561.81 × 39,690,945.80
  4. Step 4: Simplify right side
    72,728,572.47x = 3,983,683,456,229,006.50
  5. Step 5: Solve for x
    x = 3,983,683,456,229,006.50/72,728,572.47
  6. Step 6: Final answer
    x = 54,774,668.62

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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.