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Finding the Fourth Proportional to 50,840, 70,163.52 and 28,488.32

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Solution

The fourth proportional to 50,840, 70,163.52 and 28,488.32 is: 39,316.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,840 : 70,163.52 = 28,488.32 : x
  2. Step 2: Convert to fraction form
    50,840/70,163.52 = 28,488.32/x
  3. Step 3: Cross multiply
    50,840x = 70,163.52 × 28,488.32
  4. Step 4: Simplify right side
    50,840x = 1,998,840,810.09
  5. Step 5: Solve for x
    x = 1,998,840,810.09/50,840
  6. Step 6: Final answer
    x = 39,316.30

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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.