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Finding the Fourth Proportional to 53,679.40, 80,533.02 and 20,400.04

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Solution

The fourth proportional to 53,679.40, 80,533.02 and 20,400.04 is: 30,605.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,679.40 : 80,533.02 = 20,400.04 : x
  2. Step 2: Convert to fraction form
    53,679.40/80,533.02 = 20,400.04/x
  3. Step 3: Cross multiply
    53,679.40x = 80,533.02 × 20,400.04
  4. Step 4: Simplify right side
    53,679.40x = 1,642,876,829.32
  5. Step 5: Solve for x
    x = 1,642,876,829.32/53,679.40
  6. Step 6: Final answer
    x = 30,605.35

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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.