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Finding the Fourth Proportional to 45,646.65, 68,470.01 and 18,992.16

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Solution

The fourth proportional to 45,646.65, 68,470.01 and 18,992.16 is: 28,488.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,646.65 : 68,470.01 = 18,992.16 : x
  2. Step 2: Convert to fraction form
    45,646.65/68,470.01 = 18,992.16/x
  3. Step 3: Cross multiply
    45,646.65x = 68,470.01 × 18,992.16
  4. Step 4: Simplify right side
    45,646.65x = 1,300,393,290.16
  5. Step 5: Solve for x
    x = 1,300,393,290.16/45,646.65
  6. Step 6: Final answer
    x = 28,488.25

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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.