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Finding the Fourth Proportional to 85,710.88, 128,566.32 and 44,129.44

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Solution

The fourth proportional to 85,710.88, 128,566.32 and 44,129.44 is: 66,194.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,710.88 : 128,566.32 = 44,129.44 : x
  2. Step 2: Convert to fraction form
    85,710.88/128,566.32 = 44,129.44/x
  3. Step 3: Cross multiply
    85,710.88x = 128,566.32 × 44,129.44
  4. Step 4: Simplify right side
    85,710.88x = 5,673,559,704.46
  5. Step 5: Solve for x
    x = 5,673,559,704.46/85,710.88
  6. Step 6: Final answer
    x = 66,194.16

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Similar ratio
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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.