Home / 98,640.46-136,016.82-62,784.64

Finding the Fourth Proportional to 98,640.46, 136,016.82 and 62,784.64

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Solution

The fourth proportional to 98,640.46, 136,016.82 and 62,784.64 is: 86,574.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,640.46 : 136,016.82 = 62,784.64 : x
  2. Step 2: Convert to fraction form
    98,640.46/136,016.82 = 62,784.64/x
  3. Step 3: Cross multiply
    98,640.46x = 136,016.82 × 62,784.64
  4. Step 4: Simplify right side
    98,640.46x = 8,539,767,077.64
  5. Step 5: Solve for x
    x = 8,539,767,077.64/98,640.46
  6. Step 6: Final answer
    x = 86,574.69

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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.