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Finding the Fourth Proportional to 77,964.80, 116,812.80 and 36,326.40

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Solution

The fourth proportional to 77,964.80, 116,812.80 and 36,326.40 is: 54,426.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,964.80 : 116,812.80 = 36,326.40 : x
  2. Step 2: Convert to fraction form
    77,964.80/116,812.80 = 36,326.40/x
  3. Step 3: Cross multiply
    77,964.80x = 116,812.80 × 36,326.40
  4. Step 4: Simplify right side
    77,964.80x = 4,243,388,497.92
  5. Step 5: Solve for x
    x = 4,243,388,497.92/77,964.80
  6. Step 6: Final answer
    x = 54,426.98

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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.