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Finding the Fourth Proportional to 78,632.80, 108,651.44 and 62,847.52

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Solution

The fourth proportional to 78,632.80, 108,651.44 and 62,847.52 is: 86,840.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,632.80 : 108,651.44 = 62,847.52 : x
  2. Step 2: Convert to fraction form
    78,632.80/108,651.44 = 62,847.52/x
  3. Step 3: Cross multiply
    78,632.80x = 108,651.44 × 62,847.52
  4. Step 4: Simplify right side
    78,632.80x = 6,828,473,548.43
  5. Step 5: Solve for x
    x = 6,828,473,548.43/78,632.80
  6. Step 6: Final answer
    x = 86,840.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.