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Finding the Fourth Proportional to 70,251.90, 105,271.74 and 28,090.32

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Solution

The fourth proportional to 70,251.90, 105,271.74 and 28,090.32 is: 42,093.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,251.90 : 105,271.74 = 28,090.32 : x
  2. Step 2: Convert to fraction form
    70,251.90/105,271.74 = 28,090.32/x
  3. Step 3: Cross multiply
    70,251.90x = 105,271.74 × 28,090.32
  4. Step 4: Simplify right side
    70,251.90x = 2,957,116,863.56
  5. Step 5: Solve for x
    x = 2,957,116,863.56/70,251.90
  6. Step 6: Final answer
    x = 42,093.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.