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Finding the Fourth Proportional to 85,444.13, 128,200.25 and 32,839.49

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Solution

The fourth proportional to 85,444.13, 128,200.25 and 32,839.49 is: 49,272.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,444.13 : 128,200.25 = 32,839.49 : x
  2. Step 2: Convert to fraction form
    85,444.13/128,200.25 = 32,839.49/x
  3. Step 3: Cross multiply
    85,444.13x = 128,200.25 × 32,839.49
  4. Step 4: Simplify right side
    85,444.13x = 4,210,031,230.47
  5. Step 5: Solve for x
    x = 4,210,031,230.47/85,444.13
  6. Step 6: Final answer
    x = 49,272.33

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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.