Home / 55,143.94-76,102.60-31,272.70

Finding the Fourth Proportional to 55,143.94, 76,102.60 and 31,272.70

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Solution

The fourth proportional to 55,143.94, 76,102.60 and 31,272.70 is: 43,158.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,143.94 : 76,102.60 = 31,272.70 : x
  2. Step 2: Convert to fraction form
    55,143.94/76,102.60 = 31,272.70/x
  3. Step 3: Cross multiply
    55,143.94x = 76,102.60 × 31,272.70
  4. Step 4: Simplify right side
    55,143.94x = 2,379,933,779.02
  5. Step 5: Solve for x
    x = 2,379,933,779.02/55,143.94
  6. Step 6: Final answer
    x = 43,158.57

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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.