Home / 78,743.22-118,089.16-26,138.58

Finding the Fourth Proportional to 78,743.22, 118,089.16 and 26,138.58

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Solution

The fourth proportional to 78,743.22, 118,089.16 and 26,138.58 is: 39,199.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,743.22 : 118,089.16 = 26,138.58 : x
  2. Step 2: Convert to fraction form
    78,743.22/118,089.16 = 26,138.58/x
  3. Step 3: Cross multiply
    78,743.22x = 118,089.16 × 26,138.58
  4. Step 4: Simplify right side
    78,743.22x = 3,086,682,955.79
  5. Step 5: Solve for x
    x = 3,086,682,955.79/78,743.22
  6. Step 6: Final answer
    x = 39,199.35

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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.