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Finding the Fourth Proportional to 85,142.49, 117,482.56 and 51,608.49

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Solution

The fourth proportional to 85,142.49, 117,482.56 and 51,608.49 is: 71,211.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,142.49 : 117,482.56 = 51,608.49 : x
  2. Step 2: Convert to fraction form
    85,142.49/117,482.56 = 51,608.49/x
  3. Step 3: Cross multiply
    85,142.49x = 117,482.56 × 51,608.49
  4. Step 4: Simplify right side
    85,142.49x = 6,063,097,522.93
  5. Step 5: Solve for x
    x = 6,063,097,522.93/85,142.49
  6. Step 6: Final answer
    x = 71,211.18

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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.