Home / 31,205,412.57-43,067,106.78-18,153,221.61

Finding the Fourth Proportional to 31,205,412.57, 43,067,106.78 and 18,153,221.61

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Solution

The fourth proportional to 31,205,412.57, 43,067,106.78 and 18,153,221.61 is: 25,053,561.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,205,412.57 : 43,067,106.78 = 18,153,221.61 : x
  2. Step 2: Convert to fraction form
    31,205,412.57/43,067,106.78 = 18,153,221.61/x
  3. Step 3: Cross multiply
    31,205,412.57x = 43,067,106.78 × 18,153,221.61
  4. Step 4: Simplify right side
    31,205,412.57x = 781,806,733,478,873.50
  5. Step 5: Solve for x
    x = 781,806,733,478,873.50/31,205,412.57
  6. Step 6: Final answer
    x = 25,053,561.84

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1.5x scale

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.