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Finding the Fourth Proportional to 73,611.72, 110,417.31 and 18,207.72

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Solution

The fourth proportional to 73,611.72, 110,417.31 and 18,207.72 is: 27,311.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,611.72 : 110,417.31 = 18,207.72 : x
  2. Step 2: Convert to fraction form
    73,611.72/110,417.31 = 18,207.72/x
  3. Step 3: Cross multiply
    73,611.72x = 110,417.31 × 18,207.72
  4. Step 4: Simplify right side
    73,611.72x = 2,010,447,463.63
  5. Step 5: Solve for x
    x = 2,010,447,463.63/73,611.72
  6. Step 6: Final answer
    x = 27,311.51

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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.