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Finding the Fourth Proportional to 50,870.25, 70,201.80 and 28,210.21

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Solution

The fourth proportional to 50,870.25, 70,201.80 and 28,210.21 is: 38,930.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,870.25 : 70,201.80 = 28,210.21 : x
  2. Step 2: Convert to fraction form
    50,870.25/70,201.80 = 28,210.21/x
  3. Step 3: Cross multiply
    50,870.25x = 70,201.80 × 28,210.21
  4. Step 4: Simplify right side
    50,870.25x = 1,980,407,344.87
  5. Step 5: Solve for x
    x = 1,980,407,344.87/50,870.25
  6. Step 6: Final answer
    x = 38,930.56

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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.