Home / 81,389,788.40-122,226,400.20-43,126,036.40

Finding the Fourth Proportional to 81,389,788.40, 122,226,400.20 and 43,126,036.40

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Solution

The fourth proportional to 81,389,788.40, 122,226,400.20 and 43,126,036.40 is: 64,764,146.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,389,788.40 : 122,226,400.20 = 43,126,036.40 : x
  2. Step 2: Convert to fraction form
    81,389,788.40/122,226,400.20 = 43,126,036.40/x
  3. Step 3: Cross multiply
    81,389,788.40x = 122,226,400.20 × 43,126,036.40
  4. Step 4: Simplify right side
    81,389,788.40x = 5,271,140,184,066,167
  5. Step 5: Solve for x
    x = 5,271,140,184,066,167/81,389,788.40
  6. Step 6: Final answer
    x = 64,764,146.56

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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.