Home / 81,957.02-122,857.77-29,339.42

Finding the Fourth Proportional to 81,957.02, 122,857.77 and 29,339.42

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Solution

The fourth proportional to 81,957.02, 122,857.77 and 29,339.42 is: 43,981.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,957.02 : 122,857.77 = 29,339.42 : x
  2. Step 2: Convert to fraction form
    81,957.02/122,857.77 = 29,339.42/x
  3. Step 3: Cross multiply
    81,957.02x = 122,857.77 × 29,339.42
  4. Step 4: Simplify right side
    81,957.02x = 3,604,575,714.29
  5. Step 5: Solve for x
    x = 3,604,575,714.29/81,957.02
  6. Step 6: Final answer
    x = 43,981.29

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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.