Home / 85,355.10-117,790.14-47,629.32

Finding the Fourth Proportional to 85,355.10, 117,790.14 and 47,629.32

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Solution

The fourth proportional to 85,355.10, 117,790.14 and 47,629.32 is: 65,728.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,355.10 : 117,790.14 = 47,629.32 : x
  2. Step 2: Convert to fraction form
    85,355.10/117,790.14 = 47,629.32/x
  3. Step 3: Cross multiply
    85,355.10x = 117,790.14 × 47,629.32
  4. Step 4: Simplify right side
    85,355.10x = 5,610,264,270.90
  5. Step 5: Solve for x
    x = 5,610,264,270.90/85,355.10
  6. Step 6: Final answer
    x = 65,728.52

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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.