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Finding the Fourth Proportional to 85,360.14, 128,040.21 and 32,740.92

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Solution

The fourth proportional to 85,360.14, 128,040.21 and 32,740.92 is: 49,111.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,360.14 : 128,040.21 = 32,740.92 : x
  2. Step 2: Convert to fraction form
    85,360.14/128,040.21 = 32,740.92/x
  3. Step 3: Cross multiply
    85,360.14x = 128,040.21 × 32,740.92
  4. Step 4: Simplify right side
    85,360.14x = 4,192,154,272.39
  5. Step 5: Solve for x
    x = 4,192,154,272.39/85,360.14
  6. Step 6: Final answer
    x = 49,111.38

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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.