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Finding the Fourth Proportional to 53,270.40, 79,905.60 and 52,395.60

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Solution

The fourth proportional to 53,270.40, 79,905.60 and 52,395.60 is: 78,593.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,270.40 : 79,905.60 = 52,395.60 : x
  2. Step 2: Convert to fraction form
    53,270.40/79,905.60 = 52,395.60/x
  3. Step 3: Cross multiply
    53,270.40x = 79,905.60 × 52,395.60
  4. Step 4: Simplify right side
    53,270.40x = 4,186,701,855.36
  5. Step 5: Solve for x
    x = 4,186,701,855.36/53,270.40
  6. Step 6: Final answer
    x = 78,593.40

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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.