Home / 49,492.80-74,138.40-30,715.20

Finding the Fourth Proportional to 49,492.80, 74,138.40 and 30,715.20

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Solution

The fourth proportional to 49,492.80, 74,138.40 and 30,715.20 is: 46,010.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,492.80 : 74,138.40 = 30,715.20 : x
  2. Step 2: Convert to fraction form
    49,492.80/74,138.40 = 30,715.20/x
  3. Step 3: Cross multiply
    49,492.80x = 74,138.40 × 30,715.20
  4. Step 4: Simplify right side
    49,492.80x = 2,277,175,783.68
  5. Step 5: Solve for x
    x = 2,277,175,783.68/49,492.80
  6. Step 6: Final answer
    x = 46,010.24

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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.