Home / 79,013.73-109,039.05-45,020.73

Finding the Fourth Proportional to 79,013.73, 109,039.05 and 45,020.73

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Solution

The fourth proportional to 79,013.73, 109,039.05 and 45,020.73 is: 62,128.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,013.73 : 109,039.05 = 45,020.73 : x
  2. Step 2: Convert to fraction form
    79,013.73/109,039.05 = 45,020.73/x
  3. Step 3: Cross multiply
    79,013.73x = 109,039.05 × 45,020.73
  4. Step 4: Simplify right side
    79,013.73x = 4,909,017,629.51
  5. Step 5: Solve for x
    x = 4,909,017,629.51/79,013.73
  6. Step 6: Final answer
    x = 62,128.67

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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.