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Finding the Fourth Proportional to 73,703.68, 110,536.80 and 21,099.04

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Solution

The fourth proportional to 73,703.68, 110,536.80 and 21,099.04 is: 31,643.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,703.68 : 110,536.80 = 21,099.04 : x
  2. Step 2: Convert to fraction form
    73,703.68/110,536.80 = 21,099.04/x
  3. Step 3: Cross multiply
    73,703.68x = 110,536.80 × 21,099.04
  4. Step 4: Simplify right side
    73,703.68x = 2,332,220,364.67
  5. Step 5: Solve for x
    x = 2,332,220,364.67/73,703.68
  6. Step 6: Final answer
    x = 31,643.20

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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.