Home / 72,543,749.80-108,673,907.10-43,704,218.20

Finding the Fourth Proportional to 72,543,749.80, 108,673,907.10 and 43,704,218.20

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Solution

The fourth proportional to 72,543,749.80, 108,673,907.10 and 43,704,218.20 is: 65,470,949.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,543,749.80 : 108,673,907.10 = 43,704,218.20 : x
  2. Step 2: Convert to fraction form
    72,543,749.80/108,673,907.10 = 43,704,218.20/x
  3. Step 3: Cross multiply
    72,543,749.80x = 108,673,907.10 × 43,704,218.20
  4. Step 4: Simplify right side
    72,543,749.80x = 4,749,508,148,544,929
  5. Step 5: Solve for x
    x = 4,749,508,148,544,929/72,543,749.80
  6. Step 6: Final answer
    x = 65,470,949.07

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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.