Home / 31,478,655.18-43,440,634.12-18,250,402.86

Finding the Fourth Proportional to 31,478,655.18, 43,440,634.12 and 18,250,402.86

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Solution

The fourth proportional to 31,478,655.18, 43,440,634.12 and 18,250,402.86 is: 25,185,608.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,478,655.18 : 43,440,634.12 = 18,250,402.86 : x
  2. Step 2: Convert to fraction form
    31,478,655.18/43,440,634.12 = 18,250,402.86/x
  3. Step 3: Cross multiply
    31,478,655.18x = 43,440,634.12 × 18,250,402.86
  4. Step 4: Simplify right side
    31,478,655.18x = 792,809,073,183,861.50
  5. Step 5: Solve for x
    x = 792,809,073,183,861.50/31,478,655.18
  6. Step 6: Final answer
    x = 25,185,608.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.