Home / 87,381.56-131,038.94-31,211.12

Finding the Fourth Proportional to 87,381.56, 131,038.94 and 31,211.12

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Solution

The fourth proportional to 87,381.56, 131,038.94 and 31,211.12 is: 46,804.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,381.56 : 131,038.94 = 31,211.12 : x
  2. Step 2: Convert to fraction form
    87,381.56/131,038.94 = 31,211.12/x
  3. Step 3: Cross multiply
    87,381.56x = 131,038.94 × 31,211.12
  4. Step 4: Simplify right side
    87,381.56x = 4,089,872,081.01
  5. Step 5: Solve for x
    x = 4,089,872,081.01/87,381.56
  6. Step 6: Final answer
    x = 46,804.75

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1.5x scale

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.