Home / 85,431.45-117,875.43-49,599.87

Finding the Fourth Proportional to 85,431.45, 117,875.43 and 49,599.87

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Solution

The fourth proportional to 85,431.45, 117,875.43 and 49,599.87 is: 68,436.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,431.45 : 117,875.43 = 49,599.87 : x
  2. Step 2: Convert to fraction form
    85,431.45/117,875.43 = 49,599.87/x
  3. Step 3: Cross multiply
    85,431.45x = 117,875.43 × 49,599.87
  4. Step 4: Simplify right side
    85,431.45x = 5,846,606,004.19
  5. Step 5: Solve for x
    x = 5,846,606,004.19/85,431.45
  6. Step 6: Final answer
    x = 68,436.23

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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.