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Finding the Fourth Proportional to 100,955.30, 151,420.80 and 41,784.80

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Solution

The fourth proportional to 100,955.30, 151,420.80 and 41,784.80 is: 62,672.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,955.30 : 151,420.80 = 41,784.80 : x
  2. Step 2: Convert to fraction form
    100,955.30/151,420.80 = 41,784.80/x
  3. Step 3: Cross multiply
    100,955.30x = 151,420.80 × 41,784.80
  4. Step 4: Simplify right side
    100,955.30x = 6,327,087,843.84
  5. Step 5: Solve for x
    x = 6,327,087,843.84/100,955.30
  6. Step 6: Final answer
    x = 62,672.17

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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.