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Finding the Fourth Proportional to 53,783.28, 80,684.28 and 20,506.32

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Solution

The fourth proportional to 53,783.28, 80,684.28 and 20,506.32 is: 30,763.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,783.28 : 80,684.28 = 20,506.32 : x
  2. Step 2: Convert to fraction form
    53,783.28/80,684.28 = 20,506.32/x
  3. Step 3: Cross multiply
    53,783.28x = 80,684.28 × 20,506.32
  4. Step 4: Simplify right side
    53,783.28x = 1,654,537,664.65
  5. Step 5: Solve for x
    x = 1,654,537,664.65/53,783.28
  6. Step 6: Final answer
    x = 30,763.05

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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.