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Finding the Fourth Proportional to 112,741, 155,587.44 and 62,440

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Solution

The fourth proportional to 112,741, 155,587.44 and 62,440 is: 86,169.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,741 : 155,587.44 = 62,440 : x
  2. Step 2: Convert to fraction form
    112,741/155,587.44 = 62,440/x
  3. Step 3: Cross multiply
    112,741x = 155,587.44 × 62,440
  4. Step 4: Simplify right side
    112,741x = 9,714,879,753.60
  5. Step 5: Solve for x
    x = 9,714,879,753.60/112,741
  6. Step 6: Final answer
    x = 86,169.89

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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.