Home / 98,078.10-135,343.80-55,635.72

Finding the Fourth Proportional to 98,078.10, 135,343.80 and 55,635.72

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Solution

The fourth proportional to 98,078.10, 135,343.80 and 55,635.72 is: 76,775.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,078.10 : 135,343.80 = 55,635.72 : x
  2. Step 2: Convert to fraction form
    98,078.10/135,343.80 = 55,635.72/x
  3. Step 3: Cross multiply
    98,078.10x = 135,343.80 × 55,635.72
  4. Step 4: Simplify right side
    98,078.10x = 7,529,949,760.54
  5. Step 5: Solve for x
    x = 7,529,949,760.54/98,078.10
  6. Step 6: Final answer
    x = 76,775.04

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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.