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Finding the Fourth Proportional to 64,963.80, 97,478.10 and 36,905.40

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Solution

The fourth proportional to 64,963.80, 97,478.10 and 36,905.40 is: 55,376.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,963.80 : 97,478.10 = 36,905.40 : x
  2. Step 2: Convert to fraction form
    64,963.80/97,478.10 = 36,905.40/x
  3. Step 3: Cross multiply
    64,963.80x = 97,478.10 × 36,905.40
  4. Step 4: Simplify right side
    64,963.80x = 3,597,468,271.74
  5. Step 5: Solve for x
    x = 3,597,468,271.74/64,963.80
  6. Step 6: Final answer
    x = 55,376.51

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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.