Home / 47,405.58-71,108.12-12,345.18

Finding the Fourth Proportional to 47,405.58, 71,108.12 and 12,345.18

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Solution

The fourth proportional to 47,405.58, 71,108.12 and 12,345.18 is: 18,517.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,405.58 : 71,108.12 = 12,345.18 : x
  2. Step 2: Convert to fraction form
    47,405.58/71,108.12 = 12,345.18/x
  3. Step 3: Cross multiply
    47,405.58x = 71,108.12 × 12,345.18
  4. Step 4: Simplify right side
    47,405.58x = 877,842,540.86
  5. Step 5: Solve for x
    x = 877,842,540.86/47,405.58
  6. Step 6: Final answer
    x = 18,517.70

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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.