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Finding the Fourth Proportional to 66,208.79, 99,303.46 and 21,836.99

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Solution

The fourth proportional to 66,208.79, 99,303.46 and 21,836.99 is: 32,752.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,208.79 : 99,303.46 = 21,836.99 : x
  2. Step 2: Convert to fraction form
    66,208.79/99,303.46 = 21,836.99/x
  3. Step 3: Cross multiply
    66,208.79x = 99,303.46 × 21,836.99
  4. Step 4: Simplify right side
    66,208.79x = 2,168,488,662.99
  5. Step 5: Solve for x
    x = 2,168,488,662.99/66,208.79
  6. Step 6: Final answer
    x = 32,752.28

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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.