Home / 81,136.80-112,054.32-62,085.60

Finding the Fourth Proportional to 81,136.80, 112,054.32 and 62,085.60

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Solution

The fourth proportional to 81,136.80, 112,054.32 and 62,085.60 is: 85,743.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,136.80 : 112,054.32 = 62,085.60 : x
  2. Step 2: Convert to fraction form
    81,136.80/112,054.32 = 62,085.60/x
  3. Step 3: Cross multiply
    81,136.80x = 112,054.32 × 62,085.60
  4. Step 4: Simplify right side
    81,136.80x = 6,956,959,689.79
  5. Step 5: Solve for x
    x = 6,956,959,689.79/81,136.80
  6. Step 6: Final answer
    x = 85,743.58

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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.