Home / 9,291,221.68-12,821,529.40-5,161,512.81

Finding the Fourth Proportional to 9,291,221.68, 12,821,529.40 and 5,161,512.81

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Solution

The fourth proportional to 9,291,221.68, 12,821,529.40 and 5,161,512.81 is: 7,122,689.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,291,221.68 : 12,821,529.40 = 5,161,512.81 : x
  2. Step 2: Convert to fraction form
    9,291,221.68/12,821,529.40 = 5,161,512.81/x
  3. Step 3: Cross multiply
    9,291,221.68x = 12,821,529.40 × 5,161,512.81
  4. Step 4: Simplify right side
    9,291,221.68x = 66,178,488,241,891.61
  5. Step 5: Solve for x
    x = 66,178,488,241,891.61/9,291,221.68
  6. Step 6: Final answer
    x = 7,122,689.62

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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.