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Finding the Fourth Proportional to 85,118.64, 117,464.04 and 47,392.89

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Solution

The fourth proportional to 85,118.64, 117,464.04 and 47,392.89 is: 65,402.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,118.64 : 117,464.04 = 47,392.89 : x
  2. Step 2: Convert to fraction form
    85,118.64/117,464.04 = 47,392.89/x
  3. Step 3: Cross multiply
    85,118.64x = 117,464.04 × 47,392.89
  4. Step 4: Simplify right side
    85,118.64x = 5,566,960,326.68
  5. Step 5: Solve for x
    x = 5,566,960,326.68/85,118.64
  6. Step 6: Final answer
    x = 65,402.36

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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.