Home / 47,172.84-65,125.38-31,278.78

Finding the Fourth Proportional to 47,172.84, 65,125.38 and 31,278.78

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Solution

The fourth proportional to 47,172.84, 65,125.38 and 31,278.78 is: 43,182.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,172.84 : 65,125.38 = 31,278.78 : x
  2. Step 2: Convert to fraction form
    47,172.84/65,125.38 = 31,278.78/x
  3. Step 3: Cross multiply
    47,172.84x = 65,125.38 × 31,278.78
  4. Step 4: Simplify right side
    47,172.84x = 2,037,042,433.44
  5. Step 5: Solve for x
    x = 2,037,042,433.44/47,172.84
  6. Step 6: Final answer
    x = 43,182.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.