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Finding the Fourth Proportional to 45,719.76, 68,585.04 and 19,409.88

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Solution

The fourth proportional to 45,719.76, 68,585.04 and 19,409.88 is: 29,117.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,719.76 : 68,585.04 = 19,409.88 : x
  2. Step 2: Convert to fraction form
    45,719.76/68,585.04 = 19,409.88/x
  3. Step 3: Cross multiply
    45,719.76x = 68,585.04 × 19,409.88
  4. Step 4: Simplify right side
    45,719.76x = 1,331,227,396.20
  5. Step 5: Solve for x
    x = 1,331,227,396.20/45,719.76
  6. Step 6: Final answer
    x = 29,117.11

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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.