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Finding the Fourth Proportional to 45,678.38, 68,469.71 and 15,683.68

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Solution

The fourth proportional to 45,678.38, 68,469.71 and 15,683.68 is: 23,509.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,678.38 : 68,469.71 = 15,683.68 : x
  2. Step 2: Convert to fraction form
    45,678.38/68,469.71 = 15,683.68/x
  3. Step 3: Cross multiply
    45,678.38x = 68,469.71 × 15,683.68
  4. Step 4: Simplify right side
    45,678.38x = 1,073,856,643.36
  5. Step 5: Solve for x
    x = 1,073,856,643.36/45,678.38
  6. Step 6: Final answer
    x = 23,509.08

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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.