Home / 78,939.95-108,938.70-43,132.19

Finding the Fourth Proportional to 78,939.95, 108,938.70 and 43,132.19

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Solution

The fourth proportional to 78,939.95, 108,938.70 and 43,132.19 is: 59,523.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,939.95 : 108,938.70 = 43,132.19 : x
  2. Step 2: Convert to fraction form
    78,939.95/108,938.70 = 43,132.19/x
  3. Step 3: Cross multiply
    78,939.95x = 108,938.70 × 43,132.19
  4. Step 4: Simplify right side
    78,939.95x = 4,698,764,162.06
  5. Step 5: Solve for x
    x = 4,698,764,162.06/78,939.95
  6. Step 6: Final answer
    x = 59,523.27

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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.