Home / 88,903.32-122,628.78-57,021.72

Finding the Fourth Proportional to 88,903.32, 122,628.78 and 57,021.72

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Solution

The fourth proportional to 88,903.32, 122,628.78 and 57,021.72 is: 78,652.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,903.32 : 122,628.78 = 57,021.72 : x
  2. Step 2: Convert to fraction form
    88,903.32/122,628.78 = 57,021.72/x
  3. Step 3: Cross multiply
    88,903.32x = 122,628.78 × 57,021.72
  4. Step 4: Simplify right side
    88,903.32x = 6,992,503,957.10
  5. Step 5: Solve for x
    x = 6,992,503,957.10/88,903.32
  6. Step 6: Final answer
    x = 78,652.90

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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.