Home / 78,982.16-118,473.84-19,818.14

Finding the Fourth Proportional to 78,982.16, 118,473.84 and 19,818.14

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Solution

The fourth proportional to 78,982.16, 118,473.84 and 19,818.14 is: 29,727.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,982.16 : 118,473.84 = 19,818.14 : x
  2. Step 2: Convert to fraction form
    78,982.16/118,473.84 = 19,818.14/x
  3. Step 3: Cross multiply
    78,982.16x = 118,473.84 × 19,818.14
  4. Step 4: Simplify right side
    78,982.16x = 2,347,930,555.09
  5. Step 5: Solve for x
    x = 2,347,930,555.09/78,982.16
  6. Step 6: Final answer
    x = 29,727.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.