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Finding the Fourth Proportional to 50,672.86, 69,928.38 and 28,316.86

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Solution

The fourth proportional to 50,672.86, 69,928.38 and 28,316.86 is: 39,077.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,672.86 : 69,928.38 = 28,316.86 : x
  2. Step 2: Convert to fraction form
    50,672.86/69,928.38 = 28,316.86/x
  3. Step 3: Cross multiply
    50,672.86x = 69,928.38 × 28,316.86
  4. Step 4: Simplify right side
    50,672.86x = 1,980,152,146.49
  5. Step 5: Solve for x
    x = 1,980,152,146.49/50,672.86
  6. Step 6: Final answer
    x = 39,077.17

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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.