Home / 81,678.02-122,491.10-26,261.06

Finding the Fourth Proportional to 81,678.02, 122,491.10 and 26,261.06

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Solution

The fourth proportional to 81,678.02, 122,491.10 and 26,261.06 is: 39,383.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,678.02 : 122,491.10 = 26,261.06 : x
  2. Step 2: Convert to fraction form
    81,678.02/122,491.10 = 26,261.06/x
  3. Step 3: Cross multiply
    81,678.02x = 122,491.10 × 26,261.06
  4. Step 4: Simplify right side
    81,678.02x = 3,216,746,126.57
  5. Step 5: Solve for x
    x = 3,216,746,126.57/81,678.02
  6. Step 6: Final answer
    x = 39,383.25

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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.