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Finding the Fourth Proportional to 85,464.65, 117,935.15 and 47,223.79

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Solution

The fourth proportional to 85,464.65, 117,935.15 and 47,223.79 is: 65,165.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,464.65 : 117,935.15 = 47,223.79 : x
  2. Step 2: Convert to fraction form
    85,464.65/117,935.15 = 47,223.79/x
  3. Step 3: Cross multiply
    85,464.65x = 117,935.15 × 47,223.79
  4. Step 4: Simplify right side
    85,464.65x = 5,569,344,226.26
  5. Step 5: Solve for x
    x = 5,569,344,226.26/85,464.65
  6. Step 6: Final answer
    x = 65,165.47

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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.