Home / 54,912.12-75,778.20-31,038.96

Finding the Fourth Proportional to 54,912.12, 75,778.20 and 31,038.96

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Solution

The fourth proportional to 54,912.12, 75,778.20 and 31,038.96 is: 42,833.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,912.12 : 75,778.20 = 31,038.96 : x
  2. Step 2: Convert to fraction form
    54,912.12/75,778.20 = 31,038.96/x
  3. Step 3: Cross multiply
    54,912.12x = 75,778.20 × 31,038.96
  4. Step 4: Simplify right side
    54,912.12x = 2,352,076,518.67
  5. Step 5: Solve for x
    x = 2,352,076,518.67/54,912.12
  6. Step 6: Final answer
    x = 42,833.47

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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.