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Finding the Fourth Proportional to 39,219,249.60, 58,809,978.72 and 13,659,693.12

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Solution

The fourth proportional to 39,219,249.60, 58,809,978.72 and 13,659,693.12 is: 20,482,958.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,219,249.60 : 58,809,978.72 = 13,659,693.12 : x
  2. Step 2: Convert to fraction form
    39,219,249.60/58,809,978.72 = 13,659,693.12/x
  3. Step 3: Cross multiply
    39,219,249.60x = 58,809,978.72 × 13,659,693.12
  4. Step 4: Simplify right side
    39,219,249.60x = 803,326,261,708,930.38
  5. Step 5: Solve for x
    x = 803,326,261,708,930.38/39,219,249.60
  6. Step 6: Final answer
    x = 20,482,958.49

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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.