Home / 78,621.74-108,500.07-42,813.26

Finding the Fourth Proportional to 78,621.74, 108,500.07 and 42,813.26

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Solution

The fourth proportional to 78,621.74, 108,500.07 and 42,813.26 is: 59,083.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,621.74 : 108,500.07 = 42,813.26 : x
  2. Step 2: Convert to fraction form
    78,621.74/108,500.07 = 42,813.26/x
  3. Step 3: Cross multiply
    78,621.74x = 108,500.07 × 42,813.26
  4. Step 4: Simplify right side
    78,621.74x = 4,645,241,706.93
  5. Step 5: Solve for x
    x = 4,645,241,706.93/78,621.74
  6. Step 6: Final answer
    x = 59,083.43

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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.