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Finding the Fourth Proportional to 53,821.60, 80,655.60 and 39,671.20

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Solution

The fourth proportional to 53,821.60, 80,655.60 and 39,671.20 is: 59,450.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,821.60 : 80,655.60 = 39,671.20 : x
  2. Step 2: Convert to fraction form
    53,821.60/80,655.60 = 39,671.20/x
  3. Step 3: Cross multiply
    53,821.60x = 80,655.60 × 39,671.20
  4. Step 4: Simplify right side
    53,821.60x = 3,199,704,438.72
  5. Step 5: Solve for x
    x = 3,199,704,438.72/53,821.60
  6. Step 6: Final answer
    x = 59,450.19

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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.