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Finding the Fourth Proportional to 30,800.80, 46,222.80 and 19,734.40

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Solution

The fourth proportional to 30,800.80, 46,222.80 and 19,734.40 is: 29,615.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,800.80 : 46,222.80 = 19,734.40 : x
  2. Step 2: Convert to fraction form
    30,800.80/46,222.80 = 19,734.40/x
  3. Step 3: Cross multiply
    30,800.80x = 46,222.80 × 19,734.40
  4. Step 4: Simplify right side
    30,800.80x = 912,179,224.32
  5. Step 5: Solve for x
    x = 912,179,224.32/30,800.80
  6. Step 6: Final answer
    x = 29,615.44

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1.5x scale

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.