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Finding the Fourth Proportional to 85,857.88, 118,541.40 and 53,641.54

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Solution

The fourth proportional to 85,857.88, 118,541.40 and 53,641.54 is: 74,061.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,857.88 : 118,541.40 = 53,641.54 : x
  2. Step 2: Convert to fraction form
    85,857.88/118,541.40 = 53,641.54/x
  3. Step 3: Cross multiply
    85,857.88x = 118,541.40 × 53,641.54
  4. Step 4: Simplify right side
    85,857.88x = 6,358,743,249.76
  5. Step 5: Solve for x
    x = 6,358,743,249.76/85,857.88
  6. Step 6: Final answer
    x = 74,061.27

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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.