Home / 47,085.96-70,610.16-20,772

Finding the Fourth Proportional to 47,085.96, 70,610.16 and 20,772

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Solution

The fourth proportional to 47,085.96, 70,610.16 and 20,772 is: 31,149.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,085.96 : 70,610.16 = 20,772 : x
  2. Step 2: Convert to fraction form
    47,085.96/70,610.16 = 20,772/x
  3. Step 3: Cross multiply
    47,085.96x = 70,610.16 × 20,772
  4. Step 4: Simplify right side
    47,085.96x = 1,466,714,243.52
  5. Step 5: Solve for x
    x = 1,466,714,243.52/47,085.96
  6. Step 6: Final answer
    x = 31,149.72

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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.