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Finding the Fourth Proportional to 86,023.20, 129,009.20 and 33,402.40

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Solution

The fourth proportional to 86,023.20, 129,009.20 and 33,402.40 is: 50,093.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,023.20 : 129,009.20 = 33,402.40 : x
  2. Step 2: Convert to fraction form
    86,023.20/129,009.20 = 33,402.40/x
  3. Step 3: Cross multiply
    86,023.20x = 129,009.20 × 33,402.40
  4. Step 4: Simplify right side
    86,023.20x = 4,309,216,902.08
  5. Step 5: Solve for x
    x = 4,309,216,902.08/86,023.20
  6. Step 6: Final answer
    x = 50,093.66

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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.