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Finding the Fourth Proportional to 143,653.44, 215,507.90 and 48,879.79

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Solution

The fourth proportional to 143,653.44, 215,507.90 and 48,879.79 is: 73,329.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,653.44 : 215,507.90 = 48,879.79 : x
  2. Step 2: Convert to fraction form
    143,653.44/215,507.90 = 48,879.79/x
  3. Step 3: Cross multiply
    143,653.44x = 215,507.90 × 48,879.79
  4. Step 4: Simplify right side
    143,653.44x = 10,533,980,895.34
  5. Step 5: Solve for x
    x = 10,533,980,895.34/143,653.44
  6. Step 6: Final answer
    x = 73,329.12

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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.