Home / 85,014.44-127,521.76-31,705.61

Finding the Fourth Proportional to 85,014.44, 127,521.76 and 31,705.61

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Solution

The fourth proportional to 85,014.44, 127,521.76 and 31,705.61 is: 47,558.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,014.44 : 127,521.76 = 31,705.61 : x
  2. Step 2: Convert to fraction form
    85,014.44/127,521.76 = 31,705.61/x
  3. Step 3: Cross multiply
    85,014.44x = 127,521.76 × 31,705.61
  4. Step 4: Simplify right side
    85,014.44x = 4,043,155,189.07
  5. Step 5: Solve for x
    x = 4,043,155,189.07/85,014.44
  6. Step 6: Final answer
    x = 47,558.45

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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.