Home / 90,647,493.20-135,971,069.68-28,403,572.40

Finding the Fourth Proportional to 90,647,493.20, 135,971,069.68 and 28,403,572.40

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Solution

The fourth proportional to 90,647,493.20, 135,971,069.68 and 28,403,572.40 is: 42,605,305.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,647,493.20 : 135,971,069.68 = 28,403,572.40 : x
  2. Step 2: Convert to fraction form
    90,647,493.20/135,971,069.68 = 28,403,572.40/x
  3. Step 3: Cross multiply
    90,647,493.20x = 135,971,069.68 × 28,403,572.40
  4. Step 4: Simplify right side
    90,647,493.20x = 3,862,064,121,961,325
  5. Step 5: Solve for x
    x = 3,862,064,121,961,325/90,647,493.20
  6. Step 6: Final answer
    x = 42,605,305.29

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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.