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Finding the Fourth Proportional to 85,675.78, 118,218.52 and 53,822.13

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Solution

The fourth proportional to 85,675.78, 118,218.52 and 53,822.13 is: 74,265.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,675.78 : 118,218.52 = 53,822.13 : x
  2. Step 2: Convert to fraction form
    85,675.78/118,218.52 = 53,822.13/x
  3. Step 3: Cross multiply
    85,675.78x = 118,218.52 × 53,822.13
  4. Step 4: Simplify right side
    85,675.78x = 6,362,772,551.85
  5. Step 5: Solve for x
    x = 6,362,772,551.85/85,675.78
  6. Step 6: Final answer
    x = 74,265.71

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1.5x scale

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.