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Finding the Fourth Proportional to 110,899.40, 166,370.70 and 47,719.40

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Solution

The fourth proportional to 110,899.40, 166,370.70 and 47,719.40 is: 71,588.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,899.40 : 166,370.70 = 47,719.40 : x
  2. Step 2: Convert to fraction form
    110,899.40/166,370.70 = 47,719.40/x
  3. Step 3: Cross multiply
    110,899.40x = 166,370.70 × 47,719.40
  4. Step 4: Simplify right side
    110,899.40x = 7,939,109,981.58
  5. Step 5: Solve for x
    x = 7,939,109,981.58/110,899.40
  6. Step 6: Final answer
    x = 71,588.39

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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.