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Finding the Fourth Proportional to 73,704, 110,557.20 and 21,113.28

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Solution

The fourth proportional to 73,704, 110,557.20 and 21,113.28 is: 31,670.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,704 : 110,557.20 = 21,113.28 : x
  2. Step 2: Convert to fraction form
    73,704/110,557.20 = 21,113.28/x
  3. Step 3: Cross multiply
    73,704x = 110,557.20 × 21,113.28
  4. Step 4: Simplify right side
    73,704x = 2,334,225,119.62
  5. Step 5: Solve for x
    x = 2,334,225,119.62/73,704
  6. Step 6: Final answer
    x = 31,670.26

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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.