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Finding the Fourth Proportional to 85,599.03, 117,960.13 and 61,680.54

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Solution

The fourth proportional to 85,599.03, 117,960.13 and 61,680.54 is: 84,999.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,599.03 : 117,960.13 = 61,680.54 : x
  2. Step 2: Convert to fraction form
    85,599.03/117,960.13 = 61,680.54/x
  3. Step 3: Cross multiply
    85,599.03x = 117,960.13 × 61,680.54
  4. Step 4: Simplify right side
    85,599.03x = 7,275,844,516.87
  5. Step 5: Solve for x
    x = 7,275,844,516.87/85,599.03
  6. Step 6: Final answer
    x = 84,999.15

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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.