Home / 85,078.49-117,388.24-71,518.07

Finding the Fourth Proportional to 85,078.49, 117,388.24 and 71,518.07

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Solution

The fourth proportional to 85,078.49, 117,388.24 and 71,518.07 is: 98,678.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,078.49 : 117,388.24 = 71,518.07 : x
  2. Step 2: Convert to fraction form
    85,078.49/117,388.24 = 71,518.07/x
  3. Step 3: Cross multiply
    85,078.49x = 117,388.24 × 71,518.07
  4. Step 4: Simplify right side
    85,078.49x = 8,395,380,480.17
  5. Step 5: Solve for x
    x = 8,395,380,480.17/85,078.49
  6. Step 6: Final answer
    x = 98,678.07

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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.