Home / 42,534,418.20-63,801,627.30-20,979,346.20

Finding the Fourth Proportional to 42,534,418.20, 63,801,627.30 and 20,979,346.20

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Solution

The fourth proportional to 42,534,418.20, 63,801,627.30 and 20,979,346.20 is: 31,469,019.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,534,418.20 : 63,801,627.30 = 20,979,346.20 : x
  2. Step 2: Convert to fraction form
    42,534,418.20/63,801,627.30 = 20,979,346.20/x
  3. Step 3: Cross multiply
    42,534,418.20x = 63,801,627.30 × 20,979,346.20
  4. Step 4: Simplify right side
    42,534,418.20x = 1,338,516,427,250,071.25
  5. Step 5: Solve for x
    x = 1,338,516,427,250,071.25/42,534,418.20
  6. Step 6: Final answer
    x = 31,469,019.30

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Double scale
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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.