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Finding the Fourth Proportional to 70,883.30, 97,775.70 and 42,183.72

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Solution

The fourth proportional to 70,883.30, 97,775.70 and 42,183.72 is: 58,187.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,883.30 : 97,775.70 = 42,183.72 : x
  2. Step 2: Convert to fraction form
    70,883.30/97,775.70 = 42,183.72/x
  3. Step 3: Cross multiply
    70,883.30x = 97,775.70 × 42,183.72
  4. Step 4: Simplify right side
    70,883.30x = 4,124,542,751.60
  5. Step 5: Solve for x
    x = 4,124,542,751.60/70,883.30
  6. Step 6: Final answer
    x = 58,187.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.