Home / 81,862.02-122,840.10-34,473.38

Finding the Fourth Proportional to 81,862.02, 122,840.10 and 34,473.38

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Solution

The fourth proportional to 81,862.02, 122,840.10 and 34,473.38 is: 51,729.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,862.02 : 122,840.10 = 34,473.38 : x
  2. Step 2: Convert to fraction form
    81,862.02/122,840.10 = 34,473.38/x
  3. Step 3: Cross multiply
    81,862.02x = 122,840.10 × 34,473.38
  4. Step 4: Simplify right side
    81,862.02x = 4,234,712,832.34
  5. Step 5: Solve for x
    x = 4,234,712,832.34/81,862.02
  6. Step 6: Final answer
    x = 51,729.88

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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.