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Finding the Fourth Proportional to 84,807.41, 127,225.79 and 28,647.93

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Solution

The fourth proportional to 84,807.41, 127,225.79 and 28,647.93 is: 42,976.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,807.41 : 127,225.79 = 28,647.93 : x
  2. Step 2: Convert to fraction form
    84,807.41/127,225.79 = 28,647.93/x
  3. Step 3: Cross multiply
    84,807.41x = 127,225.79 × 28,647.93
  4. Step 4: Simplify right side
    84,807.41x = 3,644,755,382.88
  5. Step 5: Solve for x
    x = 3,644,755,382.88/84,807.41
  6. Step 6: Final answer
    x = 42,976.85

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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.