Home / 47,212.89-70,889.12-31,515.72

Finding the Fourth Proportional to 47,212.89, 70,889.12 and 31,515.72

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Solution

The fourth proportional to 47,212.89, 70,889.12 and 31,515.72 is: 47,320.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,212.89 : 70,889.12 = 31,515.72 : x
  2. Step 2: Convert to fraction form
    47,212.89/70,889.12 = 31,515.72/x
  3. Step 3: Cross multiply
    47,212.89x = 70,889.12 × 31,515.72
  4. Step 4: Simplify right side
    47,212.89x = 2,234,121,656.97
  5. Step 5: Solve for x
    x = 2,234,121,656.97/47,212.89
  6. Step 6: Final answer
    x = 47,320.16

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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.