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Finding the Fourth Proportional to 128,476.69, 192,604.29 and 49,646.23

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Solution

The fourth proportional to 128,476.69, 192,604.29 and 49,646.23 is: 74,426.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,476.69 : 192,604.29 = 49,646.23 : x
  2. Step 2: Convert to fraction form
    128,476.69/192,604.29 = 49,646.23/x
  3. Step 3: Cross multiply
    128,476.69x = 192,604.29 × 49,646.23
  4. Step 4: Simplify right side
    128,476.69x = 9,562,076,880.33
  5. Step 5: Solve for x
    x = 9,562,076,880.33/128,476.69
  6. Step 6: Final answer
    x = 74,426.55

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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.