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Finding the Fourth Proportional to 53,206.40, 79,809.60 and 36,617.60

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Solution

The fourth proportional to 53,206.40, 79,809.60 and 36,617.60 is: 54,926.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,206.40 : 79,809.60 = 36,617.60 : x
  2. Step 2: Convert to fraction form
    53,206.40/79,809.60 = 36,617.60/x
  3. Step 3: Cross multiply
    53,206.40x = 79,809.60 × 36,617.60
  4. Step 4: Simplify right side
    53,206.40x = 2,922,436,008.96
  5. Step 5: Solve for x
    x = 2,922,436,008.96/53,206.40
  6. Step 6: Final answer
    x = 54,926.40

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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.