Home / 85,156.06-127,737.62-31,842.64

Finding the Fourth Proportional to 85,156.06, 127,737.62 and 31,842.64

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Solution

The fourth proportional to 85,156.06, 127,737.62 and 31,842.64 is: 47,765.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,156.06 : 127,737.62 = 31,842.64 : x
  2. Step 2: Convert to fraction form
    85,156.06/127,737.62 = 31,842.64/x
  3. Step 3: Cross multiply
    85,156.06x = 127,737.62 × 31,842.64
  4. Step 4: Simplify right side
    85,156.06x = 4,067,503,048.12
  5. Step 5: Solve for x
    x = 4,067,503,048.12/85,156.06
  6. Step 6: Final answer
    x = 47,765.28

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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.