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Finding the Fourth Proportional to 50,678.40, 69,935.04 and 28,322.40

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Solution

The fourth proportional to 50,678.40, 69,935.04 and 28,322.40 is: 39,084.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,678.40 : 69,935.04 = 28,322.40 : x
  2. Step 2: Convert to fraction form
    50,678.40/69,935.04 = 28,322.40/x
  3. Step 3: Cross multiply
    50,678.40x = 69,935.04 × 28,322.40
  4. Step 4: Simplify right side
    50,678.40x = 1,980,728,176.90
  5. Step 5: Solve for x
    x = 1,980,728,176.90/50,678.40
  6. Step 6: Final answer
    x = 39,084.27

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1.5x scale

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.