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Finding the Fourth Proportional to 99,805.30, 149,817.30 and 62,407.60

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Solution

The fourth proportional to 99,805.30, 149,817.30 and 62,407.60 is: 93,679.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,805.30 : 149,817.30 = 62,407.60 : x
  2. Step 2: Convert to fraction form
    99,805.30/149,817.30 = 62,407.60/x
  3. Step 3: Cross multiply
    99,805.30x = 149,817.30 × 62,407.60
  4. Step 4: Simplify right side
    99,805.30x = 9,349,738,131.48
  5. Step 5: Solve for x
    x = 9,349,738,131.48/99,805.30
  6. Step 6: Final answer
    x = 93,679.78

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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.