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Finding the Fourth Proportional to 84,937.86, 127,422.11 and 34,990.70

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Solution

The fourth proportional to 84,937.86, 127,422.11 and 34,990.70 is: 52,492.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,937.86 : 127,422.11 = 34,990.70 : x
  2. Step 2: Convert to fraction form
    84,937.86/127,422.11 = 34,990.70/x
  3. Step 3: Cross multiply
    84,937.86x = 127,422.11 × 34,990.70
  4. Step 4: Simplify right side
    84,937.86x = 4,458,588,824.38
  5. Step 5: Solve for x
    x = 4,458,588,824.38/84,937.86
  6. Step 6: Final answer
    x = 52,492.36

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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.