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Finding the Fourth Proportional to 45,374.78, 68,053.16 and 43,124.40

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Solution

The fourth proportional to 45,374.78, 68,053.16 and 43,124.40 is: 64,678.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,374.78 : 68,053.16 = 43,124.40 : x
  2. Step 2: Convert to fraction form
    45,374.78/68,053.16 = 43,124.40/x
  3. Step 3: Cross multiply
    45,374.78x = 68,053.16 × 43,124.40
  4. Step 4: Simplify right side
    45,374.78x = 2,934,751,800.92
  5. Step 5: Solve for x
    x = 2,934,751,800.92/45,374.78
  6. Step 6: Final answer
    x = 64,678.04

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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.