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Finding the Fourth Proportional to 85,891.78, 118,530.30 and 48,166.03

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Solution

The fourth proportional to 85,891.78, 118,530.30 and 48,166.03 is: 66,468.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,891.78 : 118,530.30 = 48,166.03 : x
  2. Step 2: Convert to fraction form
    85,891.78/118,530.30 = 48,166.03/x
  3. Step 3: Cross multiply
    85,891.78x = 118,530.30 × 48,166.03
  4. Step 4: Simplify right side
    85,891.78x = 5,709,133,985.71
  5. Step 5: Solve for x
    x = 5,709,133,985.71/85,891.78
  6. Step 6: Final answer
    x = 66,468.92

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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.