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Finding the Fourth Proportional to 70,349.88, 105,524.62 and 54,362.68

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Solution

The fourth proportional to 70,349.88, 105,524.62 and 54,362.68 is: 81,543.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,349.88 : 105,524.62 = 54,362.68 : x
  2. Step 2: Convert to fraction form
    70,349.88/105,524.62 = 54,362.68/x
  3. Step 3: Cross multiply
    70,349.88x = 105,524.62 × 54,362.68
  4. Step 4: Simplify right side
    70,349.88x = 5,736,600,349.75
  5. Step 5: Solve for x
    x = 5,736,600,349.75/70,349.88
  6. Step 6: Final answer
    x = 81,543.86

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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.