Home / 79,638.06-109,900.54-43,828.08

Finding the Fourth Proportional to 79,638.06, 109,900.54 and 43,828.08

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Solution

The fourth proportional to 79,638.06, 109,900.54 and 43,828.08 is: 60,482.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,638.06 : 109,900.54 = 43,828.08 : x
  2. Step 2: Convert to fraction form
    79,638.06/109,900.54 = 43,828.08/x
  3. Step 3: Cross multiply
    79,638.06x = 109,900.54 × 43,828.08
  4. Step 4: Simplify right side
    79,638.06x = 4,816,729,659.16
  5. Step 5: Solve for x
    x = 4,816,729,659.16/79,638.06
  6. Step 6: Final answer
    x = 60,482.76

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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.