Home / 72,758,544.63-109,138,997.92-20,943,834.45

Finding the Fourth Proportional to 72,758,544.63, 109,138,997.92 and 20,943,834.45

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Solution

The fourth proportional to 72,758,544.63, 109,138,997.92 and 20,943,834.45 is: 31,416,091.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,758,544.63 : 109,138,997.92 = 20,943,834.45 : x
  2. Step 2: Convert to fraction form
    72,758,544.63/109,138,997.92 = 20,943,834.45/x
  3. Step 3: Cross multiply
    72,758,544.63x = 109,138,997.92 × 20,943,834.45
  4. Step 4: Simplify right side
    72,758,544.63x = 2,285,789,104,475,374.50
  5. Step 5: Solve for x
    x = 2,285,789,104,475,374.50/72,758,544.63
  6. Step 6: Final answer
    x = 31,416,091.62

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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.