Home / 31,778,891.68-47,608,194.48-18,786,143.20

Finding the Fourth Proportional to 31,778,891.68, 47,608,194.48 and 18,786,143.20

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Solution

The fourth proportional to 31,778,891.68, 47,608,194.48 and 18,786,143.20 is: 28,143,661.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,778,891.68 : 47,608,194.48 = 18,786,143.20 : x
  2. Step 2: Convert to fraction form
    31,778,891.68/47,608,194.48 = 18,786,143.20/x
  3. Step 3: Cross multiply
    31,778,891.68x = 47,608,194.48 × 18,786,143.20
  4. Step 4: Simplify right side
    31,778,891.68x = 894,374,358,994,729.50
  5. Step 5: Solve for x
    x = 894,374,358,994,729.50/31,778,891.68
  6. Step 6: Final answer
    x = 28,143,661.14

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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.