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Finding the Fourth Proportional to 99,635.76, 149,457.60 and 39,675.60

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Solution

The fourth proportional to 99,635.76, 149,457.60 and 39,675.60 is: 59,514.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,635.76 : 149,457.60 = 39,675.60 : x
  2. Step 2: Convert to fraction form
    99,635.76/149,457.60 = 39,675.60/x
  3. Step 3: Cross multiply
    99,635.76x = 149,457.60 × 39,675.60
  4. Step 4: Simplify right side
    99,635.76x = 5,929,819,954.56
  5. Step 5: Solve for x
    x = 5,929,819,954.56/99,635.76
  6. Step 6: Final answer
    x = 59,514.98

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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.