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Finding the Fourth Proportional to 73,011.84, 109,517.75 and 28,659.48

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Solution

The fourth proportional to 73,011.84, 109,517.75 and 28,659.48 is: 42,989.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,011.84 : 109,517.75 = 28,659.48 : x
  2. Step 2: Convert to fraction form
    73,011.84/109,517.75 = 28,659.48/x
  3. Step 3: Cross multiply
    73,011.84x = 109,517.75 × 28,659.48
  4. Step 4: Simplify right side
    73,011.84x = 3,138,721,765.77
  5. Step 5: Solve for x
    x = 3,138,721,765.77/73,011.84
  6. Step 6: Final answer
    x = 42,989.22

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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.