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Finding the Fourth Proportional to 49,688, 74,422.86 and 45,799

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Solution

The fourth proportional to 49,688, 74,422.86 and 45,799 is: 68,597.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,688 : 74,422.86 = 45,799 : x
  2. Step 2: Convert to fraction form
    49,688/74,422.86 = 45,799/x
  3. Step 3: Cross multiply
    49,688x = 74,422.86 × 45,799
  4. Step 4: Simplify right side
    49,688x = 3,408,492,565.14
  5. Step 5: Solve for x
    x = 3,408,492,565.14/49,688
  6. Step 6: Final answer
    x = 68,597.90

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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.