Home / 85,036.85-117,311.59-54,831.87

Finding the Fourth Proportional to 85,036.85, 117,311.59 and 54,831.87

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Solution

The fourth proportional to 85,036.85, 117,311.59 and 54,831.87 is: 75,642.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,036.85 : 117,311.59 = 54,831.87 : x
  2. Step 2: Convert to fraction form
    85,036.85/117,311.59 = 54,831.87/x
  3. Step 3: Cross multiply
    85,036.85x = 117,311.59 × 54,831.87
  4. Step 4: Simplify right side
    85,036.85x = 6,432,414,360.83
  5. Step 5: Solve for x
    x = 6,432,414,360.83/85,036.85
  6. Step 6: Final answer
    x = 75,642.67

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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.