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Finding the Fourth Proportional to 70,388.64, 105,543 and 62,087.76

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Solution

The fourth proportional to 70,388.64, 105,543 and 62,087.76 is: 93,096.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,388.64 : 105,543 = 62,087.76 : x
  2. Step 2: Convert to fraction form
    70,388.64/105,543 = 62,087.76/x
  3. Step 3: Cross multiply
    70,388.64x = 105,543 × 62,087.76
  4. Step 4: Simplify right side
    70,388.64x = 6,552,928,453.68
  5. Step 5: Solve for x
    x = 6,552,928,453.68/70,388.64
  6. Step 6: Final answer
    x = 93,096.39

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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.