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Finding the Fourth Proportional to 73,101.96, 109,636.74 and 20,516.76

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Solution

The fourth proportional to 73,101.96, 109,636.74 and 20,516.76 is: 30,770.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,101.96 : 109,636.74 = 20,516.76 : x
  2. Step 2: Convert to fraction form
    73,101.96/109,636.74 = 20,516.76/x
  3. Step 3: Cross multiply
    73,101.96x = 109,636.74 × 20,516.76
  4. Step 4: Simplify right side
    73,101.96x = 2,249,390,681.76
  5. Step 5: Solve for x
    x = 2,249,390,681.76/73,101.96
  6. Step 6: Final answer
    x = 30,770.59

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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.