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Finding the Fourth Proportional to 49,574.64, 68,412.81 and 28,353.87

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Solution

The fourth proportional to 49,574.64, 68,412.81 and 28,353.87 is: 39,128.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,574.64 : 68,412.81 = 28,353.87 : x
  2. Step 2: Convert to fraction form
    49,574.64/68,412.81 = 28,353.87/x
  3. Step 3: Cross multiply
    49,574.64x = 68,412.81 × 28,353.87
  4. Step 4: Simplify right side
    49,574.64x = 1,939,767,921.07
  5. Step 5: Solve for x
    x = 1,939,767,921.07/49,574.64
  6. Step 6: Final answer
    x = 39,128.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.