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Finding the Fourth Proportional to 63,992, 88,448.80 and 56,380.16

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Solution

The fourth proportional to 63,992, 88,448.80 and 56,380.16 is: 77,927.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,992 : 88,448.80 = 56,380.16 : x
  2. Step 2: Convert to fraction form
    63,992/88,448.80 = 56,380.16/x
  3. Step 3: Cross multiply
    63,992x = 88,448.80 × 56,380.16
  4. Step 4: Simplify right side
    63,992x = 4,986,757,495.81
  5. Step 5: Solve for x
    x = 4,986,757,495.81/63,992
  6. Step 6: Final answer
    x = 77,927.83

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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.