Home / 47,141.76-70,712.40-12,081.36

Finding the Fourth Proportional to 47,141.76, 70,712.40 and 12,081.36

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Solution

The fourth proportional to 47,141.76, 70,712.40 and 12,081.36 is: 18,121.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,141.76 : 70,712.40 = 12,081.36 : x
  2. Step 2: Convert to fraction form
    47,141.76/70,712.40 = 12,081.36/x
  3. Step 3: Cross multiply
    47,141.76x = 70,712.40 × 12,081.36
  4. Step 4: Simplify right side
    47,141.76x = 854,301,960.86
  5. Step 5: Solve for x
    x = 854,301,960.86/47,141.76
  6. Step 6: Final answer
    x = 18,121.98

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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.