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Finding the Fourth Proportional to 86,235.50, 119,004.96 and 48,509.75

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Solution

The fourth proportional to 86,235.50, 119,004.96 and 48,509.75 is: 66,943.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,235.50 : 119,004.96 = 48,509.75 : x
  2. Step 2: Convert to fraction form
    86,235.50/119,004.96 = 48,509.75/x
  3. Step 3: Cross multiply
    86,235.50x = 119,004.96 × 48,509.75
  4. Step 4: Simplify right side
    86,235.50x = 5,772,901,337.78
  5. Step 5: Solve for x
    x = 5,772,901,337.78/86,235.50
  6. Step 6: Final answer
    x = 66,943.44

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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.