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Finding the Fourth Proportional to 99,790.52, 149,750.64 and 53,076.20

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Solution

The fourth proportional to 99,790.52, 149,750.64 and 53,076.20 is: 79,648.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,790.52 : 149,750.64 = 53,076.20 : x
  2. Step 2: Convert to fraction form
    99,790.52/149,750.64 = 53,076.20/x
  3. Step 3: Cross multiply
    99,790.52x = 149,750.64 × 53,076.20
  4. Step 4: Simplify right side
    99,790.52x = 7,948,194,918.77
  5. Step 5: Solve for x
    x = 7,948,194,918.77/99,790.52
  6. Step 6: Final answer
    x = 79,648.80

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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.