Home / 72,239,039.07-108,362,338.07-20,427,429.57

Finding the Fourth Proportional to 72,239,039.07, 108,362,338.07 and 20,427,429.57

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Solution

The fourth proportional to 72,239,039.07, 108,362,338.07 and 20,427,429.57 is: 30,642,213.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,239,039.07 : 108,362,338.07 = 20,427,429.57 : x
  2. Step 2: Convert to fraction form
    72,239,039.07/108,362,338.07 = 20,427,429.57/x
  3. Step 3: Cross multiply
    72,239,039.07x = 108,362,338.07 × 20,427,429.57
  4. Step 4: Simplify right side
    72,239,039.07x = 2,213,564,028,863,317.50
  5. Step 5: Solve for x
    x = 2,213,564,028,863,317.50/72,239,039.07
  6. Step 6: Final answer
    x = 30,642,213.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.