Home / 85,380.12-117,831.24-47,660.04

Finding the Fourth Proportional to 85,380.12, 117,831.24 and 47,660.04

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Solution

The fourth proportional to 85,380.12, 117,831.24 and 47,660.04 is: 65,774.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,380.12 : 117,831.24 = 47,660.04 : x
  2. Step 2: Convert to fraction form
    85,380.12/117,831.24 = 47,660.04/x
  3. Step 3: Cross multiply
    85,380.12x = 117,831.24 × 47,660.04
  4. Step 4: Simplify right side
    85,380.12x = 5,615,841,611.65
  5. Step 5: Solve for x
    x = 5,615,841,611.65/85,380.12
  6. Step 6: Final answer
    x = 65,774.58

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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.