Home / 35,821.20-53,731.80-31,447.20

Finding the Fourth Proportional to 35,821.20, 53,731.80 and 31,447.20

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Solution

The fourth proportional to 35,821.20, 53,731.80 and 31,447.20 is: 47,170.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,821.20 : 53,731.80 = 31,447.20 : x
  2. Step 2: Convert to fraction form
    35,821.20/53,731.80 = 31,447.20/x
  3. Step 3: Cross multiply
    35,821.20x = 53,731.80 × 31,447.20
  4. Step 4: Simplify right side
    35,821.20x = 1,689,714,660.96
  5. Step 5: Solve for x
    x = 1,689,714,660.96/35,821.20
  6. Step 6: Final answer
    x = 47,170.80

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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.