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Finding the Fourth Proportional to 53,006.60, 79,479.66 and 21,804.68

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Solution

The fourth proportional to 53,006.60, 79,479.66 and 21,804.68 is: 32,694.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,006.60 : 79,479.66 = 21,804.68 : x
  2. Step 2: Convert to fraction form
    53,006.60/79,479.66 = 21,804.68/x
  3. Step 3: Cross multiply
    53,006.60x = 79,479.66 × 21,804.68
  4. Step 4: Simplify right side
    53,006.60x = 1,733,028,552.81
  5. Step 5: Solve for x
    x = 1,733,028,552.81/53,006.60
  6. Step 6: Final answer
    x = 32,694.58

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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.