Home / 85,459.62-117,767.79-61,541.13

Finding the Fourth Proportional to 85,459.62, 117,767.79 and 61,541.13

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Solution

The fourth proportional to 85,459.62, 117,767.79 and 61,541.13 is: 84,806.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,459.62 : 117,767.79 = 61,541.13 : x
  2. Step 2: Convert to fraction form
    85,459.62/117,767.79 = 61,541.13/x
  3. Step 3: Cross multiply
    85,459.62x = 117,767.79 × 61,541.13
  4. Step 4: Simplify right side
    85,459.62x = 7,247,562,874.20
  5. Step 5: Solve for x
    x = 7,247,562,874.20/85,459.62
  6. Step 6: Final answer
    x = 84,806.87

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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.