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Finding the Fourth Proportional to 71,656.34, 107,484.38 and 19,065.84

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Solution

The fourth proportional to 71,656.34, 107,484.38 and 19,065.84 is: 28,598.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,656.34 : 107,484.38 = 19,065.84 : x
  2. Step 2: Convert to fraction form
    71,656.34/107,484.38 = 19,065.84/x
  3. Step 3: Cross multiply
    71,656.34x = 107,484.38 × 19,065.84
  4. Step 4: Simplify right side
    71,656.34x = 2,049,279,991.58
  5. Step 5: Solve for x
    x = 2,049,279,991.58/71,656.34
  6. Step 6: Final answer
    x = 28,598.73

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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.