Home / 49,378.75-74,068.13-12,442.75

Finding the Fourth Proportional to 49,378.75, 74,068.13 and 12,442.75

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Solution

The fourth proportional to 49,378.75, 74,068.13 and 12,442.75 is: 18,664.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,378.75 : 74,068.13 = 12,442.75 : x
  2. Step 2: Convert to fraction form
    49,378.75/74,068.13 = 12,442.75/x
  3. Step 3: Cross multiply
    49,378.75x = 74,068.13 × 12,442.75
  4. Step 4: Simplify right side
    49,378.75x = 921,611,162.34
  5. Step 5: Solve for x
    x = 921,611,162.34/49,378.75
  6. Step 6: Final answer
    x = 18,664.13

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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.