Home / 85,615.24-118,178.20-49,835.32

Finding the Fourth Proportional to 85,615.24, 118,178.20 and 49,835.32

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Solution

The fourth proportional to 85,615.24, 118,178.20 and 49,835.32 is: 68,789.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,615.24 : 118,178.20 = 49,835.32 : x
  2. Step 2: Convert to fraction form
    85,615.24/118,178.20 = 49,835.32/x
  3. Step 3: Cross multiply
    85,615.24x = 118,178.20 × 49,835.32
  4. Step 4: Simplify right side
    85,615.24x = 5,889,448,414.02
  5. Step 5: Solve for x
    x = 5,889,448,414.02/85,615.24
  6. Step 6: Final answer
    x = 68,789.72

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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.