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Finding the Fourth Proportional to 110,315.90, 165,328.47 and 43,719.72

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Solution

The fourth proportional to 110,315.90, 165,328.47 and 43,719.72 is: 65,521.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,315.90 : 165,328.47 = 43,719.72 : x
  2. Step 2: Convert to fraction form
    110,315.90/165,328.47 = 43,719.72/x
  3. Step 3: Cross multiply
    110,315.90x = 165,328.47 × 43,719.72
  4. Step 4: Simplify right side
    110,315.90x = 7,228,114,416.43
  5. Step 5: Solve for x
    x = 7,228,114,416.43/110,315.90
  6. Step 6: Final answer
    x = 65,521.96

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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.