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Finding the Fourth Proportional to 85,532.52, 128,261.66 and 32,905.07

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Solution

The fourth proportional to 85,532.52, 128,261.66 and 32,905.07 is: 49,343.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,532.52 : 128,261.66 = 32,905.07 : x
  2. Step 2: Convert to fraction form
    85,532.52/128,261.66 = 32,905.07/x
  3. Step 3: Cross multiply
    85,532.52x = 128,261.66 × 32,905.07
  4. Step 4: Simplify right side
    85,532.52x = 4,220,458,900.62
  5. Step 5: Solve for x
    x = 4,220,458,900.62/85,532.52
  6. Step 6: Final answer
    x = 49,343.32

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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.