Home / 57,040.56-78,720.12-31,888.44

Finding the Fourth Proportional to 57,040.56, 78,720.12 and 31,888.44

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Solution

The fourth proportional to 57,040.56, 78,720.12 and 31,888.44 is: 44,008.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,040.56 : 78,720.12 = 31,888.44 : x
  2. Step 2: Convert to fraction form
    57,040.56/78,720.12 = 31,888.44/x
  3. Step 3: Cross multiply
    57,040.56x = 78,720.12 × 31,888.44
  4. Step 4: Simplify right side
    57,040.56x = 2,510,261,823.41
  5. Step 5: Solve for x
    x = 2,510,261,823.41/57,040.56
  6. Step 6: Final answer
    x = 44,008.37

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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.