Home / 98,636.78-136,080.51-62,820.38

Finding the Fourth Proportional to 98,636.78, 136,080.51 and 62,820.38

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Solution

The fourth proportional to 98,636.78, 136,080.51 and 62,820.38 is: 86,667.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,636.78 : 136,080.51 = 62,820.38 : x
  2. Step 2: Convert to fraction form
    98,636.78/136,080.51 = 62,820.38/x
  3. Step 3: Cross multiply
    98,636.78x = 136,080.51 × 62,820.38
  4. Step 4: Simplify right side
    98,636.78x = 8,548,629,348.79
  5. Step 5: Solve for x
    x = 8,548,629,348.79/98,636.78
  6. Step 6: Final answer
    x = 86,667.77

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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.