Home / 78,888.33-108,861.53-43,071.21

Finding the Fourth Proportional to 78,888.33, 108,861.53 and 43,071.21

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Solution

The fourth proportional to 78,888.33, 108,861.53 and 43,071.21 is: 59,435.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,888.33 : 108,861.53 = 43,071.21 : x
  2. Step 2: Convert to fraction form
    78,888.33/108,861.53 = 43,071.21/x
  3. Step 3: Cross multiply
    78,888.33x = 108,861.53 × 43,071.21
  4. Step 4: Simplify right side
    78,888.33x = 4,688,797,604.20
  5. Step 5: Solve for x
    x = 4,688,797,604.20/78,888.33
  6. Step 6: Final answer
    x = 59,435.88

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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.