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Finding the Fourth Proportional to 73,597.72, 110,415.21 and 21,007.39

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Solution

The fourth proportional to 73,597.72, 110,415.21 and 21,007.39 is: 31,516.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,597.72 : 110,415.21 = 21,007.39 : x
  2. Step 2: Convert to fraction form
    73,597.72/110,415.21 = 21,007.39/x
  3. Step 3: Cross multiply
    73,597.72x = 110,415.21 × 21,007.39
  4. Step 4: Simplify right side
    73,597.72x = 2,319,535,378.40
  5. Step 5: Solve for x
    x = 2,319,535,378.40/73,597.72
  6. Step 6: Final answer
    x = 31,516.40

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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.