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Finding the Fourth Proportional to 50,827.50, 70,143.03 and 28,471.50

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Solution

The fourth proportional to 50,827.50, 70,143.03 and 28,471.50 is: 39,291.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,827.50 : 70,143.03 = 28,471.50 : x
  2. Step 2: Convert to fraction form
    50,827.50/70,143.03 = 28,471.50/x
  3. Step 3: Cross multiply
    50,827.50x = 70,143.03 × 28,471.50
  4. Step 4: Simplify right side
    50,827.50x = 1,997,077,278.65
  5. Step 5: Solve for x
    x = 1,997,077,278.65/50,827.50
  6. Step 6: Final answer
    x = 39,291.27

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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.