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Finding the Fourth Proportional to 45,693.90, 68,516.55 and 19,368.90

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Solution

The fourth proportional to 45,693.90, 68,516.55 and 19,368.90 is: 29,043.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,693.90 : 68,516.55 = 19,368.90 : x
  2. Step 2: Convert to fraction form
    45,693.90/68,516.55 = 19,368.90/x
  3. Step 3: Cross multiply
    45,693.90x = 68,516.55 × 19,368.90
  4. Step 4: Simplify right side
    45,693.90x = 1,327,090,205.30
  5. Step 5: Solve for x
    x = 1,327,090,205.30/45,693.90
  6. Step 6: Final answer
    x = 29,043.05

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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.