Home / 100,648.06-138,894.60-57,628.22

Finding the Fourth Proportional to 100,648.06, 138,894.60 and 57,628.22

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Solution

The fourth proportional to 100,648.06, 138,894.60 and 57,628.22 is: 79,527.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,648.06 : 138,894.60 = 57,628.22 : x
  2. Step 2: Convert to fraction form
    100,648.06/138,894.60 = 57,628.22/x
  3. Step 3: Cross multiply
    100,648.06x = 138,894.60 × 57,628.22
  4. Step 4: Simplify right side
    100,648.06x = 8,004,248,087.24
  5. Step 5: Solve for x
    x = 8,004,248,087.24/100,648.06
  6. Step 6: Final answer
    x = 79,527.10

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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.