Home / 38,771,622.21-53,503,917.05-21,131,081.76

Finding the Fourth Proportional to 38,771,622.21, 53,503,917.05 and 21,131,081.76

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Solution

The fourth proportional to 38,771,622.21, 53,503,917.05 and 21,131,081.76 is: 29,160,390.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,771,622.21 : 53,503,917.05 = 21,131,081.76 : x
  2. Step 2: Convert to fraction form
    38,771,622.21/53,503,917.05 = 21,131,081.76/x
  3. Step 3: Cross multiply
    38,771,622.21x = 53,503,917.05 × 21,131,081.76
  4. Step 4: Simplify right side
    38,771,622.21x = 1,130,595,645,917,275.50
  5. Step 5: Solve for x
    x = 1,130,595,645,917,275.50/38,771,622.21
  6. Step 6: Final answer
    x = 29,160,390.55

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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.