Home / 72,462,320.42-99,998,437.05-39,422,806.56

Finding the Fourth Proportional to 72,462,320.42, 99,998,437.05 and 39,422,806.56

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Solution

The fourth proportional to 72,462,320.42, 99,998,437.05 and 39,422,806.56 is: 54,403,709.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,462,320.42 : 99,998,437.05 = 39,422,806.56 : x
  2. Step 2: Convert to fraction form
    72,462,320.42/99,998,437.05 = 39,422,806.56/x
  3. Step 3: Cross multiply
    72,462,320.42x = 99,998,437.05 × 39,422,806.56
  4. Step 4: Simplify right side
    72,462,320.42x = 3,942,219,040,124,487
  5. Step 5: Solve for x
    x = 3,942,219,040,124,487/72,462,320.42
  6. Step 6: Final answer
    x = 54,403,709.65

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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.