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Finding the Fourth Proportional to 86,509.85, 119,548.61 and 62,389.97

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Solution

The fourth proportional to 86,509.85, 119,548.61 and 62,389.97 is: 86,217.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,509.85 : 119,548.61 = 62,389.97 : x
  2. Step 2: Convert to fraction form
    86,509.85/119,548.61 = 62,389.97/x
  3. Step 3: Cross multiply
    86,509.85x = 119,548.61 × 62,389.97
  4. Step 4: Simplify right side
    86,509.85x = 7,458,633,281.75
  5. Step 5: Solve for x
    x = 7,458,633,281.75/86,509.85
  6. Step 6: Final answer
    x = 86,217.16

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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.