Home / 81,971,738.10-122,957,607.15-21,387,464.10

Finding the Fourth Proportional to 81,971,738.10, 122,957,607.15 and 21,387,464.10

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Solution

The fourth proportional to 81,971,738.10, 122,957,607.15 and 21,387,464.10 is: 32,081,196.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,971,738.10 : 122,957,607.15 = 21,387,464.10 : x
  2. Step 2: Convert to fraction form
    81,971,738.10/122,957,607.15 = 21,387,464.10/x
  3. Step 3: Cross multiply
    81,971,738.10x = 122,957,607.15 × 21,387,464.10
  4. Step 4: Simplify right side
    81,971,738.10x = 2,629,751,408,742,528.50
  5. Step 5: Solve for x
    x = 2,629,751,408,742,528.50/81,971,738.10
  6. Step 6: Final answer
    x = 32,081,196.15

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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.