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Finding the Fourth Proportional to 86,895.56, 119,918.40 and 49,169

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Solution

The fourth proportional to 86,895.56, 119,918.40 and 49,169 is: 67,854.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,895.56 : 119,918.40 = 49,169 : x
  2. Step 2: Convert to fraction form
    86,895.56/119,918.40 = 49,169/x
  3. Step 3: Cross multiply
    86,895.56x = 119,918.40 × 49,169
  4. Step 4: Simplify right side
    86,895.56x = 5,896,267,809.60
  5. Step 5: Solve for x
    x = 5,896,267,809.60/86,895.56
  6. Step 6: Final answer
    x = 67,854.65

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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.