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Finding the Fourth Proportional to 25,325,978.81, 37,979,662.32 and 8,702,871.66

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Solution

The fourth proportional to 25,325,978.81, 37,979,662.32 and 8,702,871.66 is: 13,051,109.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,325,978.81 : 37,979,662.32 = 8,702,871.66 : x
  2. Step 2: Convert to fraction form
    25,325,978.81/37,979,662.32 = 8,702,871.66/x
  3. Step 3: Cross multiply
    25,325,978.81x = 37,979,662.32 × 8,702,871.66
  4. Step 4: Simplify right side
    25,325,978.81x = 330,532,126,861,097.88
  5. Step 5: Solve for x
    x = 330,532,126,861,097.88/25,325,978.81
  6. Step 6: Final answer
    x = 13,051,109.67

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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.