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Finding the Fourth Proportional to 64,874.80, 97,344.60 and 36,816.40

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Solution

The fourth proportional to 64,874.80, 97,344.60 and 36,816.40 is: 55,242.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,874.80 : 97,344.60 = 36,816.40 : x
  2. Step 2: Convert to fraction form
    64,874.80/97,344.60 = 36,816.40/x
  3. Step 3: Cross multiply
    64,874.80x = 97,344.60 × 36,816.40
  4. Step 4: Simplify right side
    64,874.80x = 3,583,877,731.44
  5. Step 5: Solve for x
    x = 3,583,877,731.44/64,874.80
  6. Step 6: Final answer
    x = 55,242.99

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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.