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Finding the Fourth Proportional to 66,299.31, 99,350.55 and 51,435

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Solution

The fourth proportional to 66,299.31, 99,350.55 and 51,435 is: 77,076.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,299.31 : 99,350.55 = 51,435 : x
  2. Step 2: Convert to fraction form
    66,299.31/99,350.55 = 51,435/x
  3. Step 3: Cross multiply
    66,299.31x = 99,350.55 × 51,435
  4. Step 4: Simplify right side
    66,299.31x = 5,110,095,539.25
  5. Step 5: Solve for x
    x = 5,110,095,539.25/66,299.31
  6. Step 6: Final answer
    x = 77,076.15

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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.