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Finding the Fourth Proportional to 67,987.10, 102,017.10 and 28,548.20

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Solution

The fourth proportional to 67,987.10, 102,017.10 and 28,548.20 is: 42,837.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,987.10 : 102,017.10 = 28,548.20 : x
  2. Step 2: Convert to fraction form
    67,987.10/102,017.10 = 28,548.20/x
  3. Step 3: Cross multiply
    67,987.10x = 102,017.10 × 28,548.20
  4. Step 4: Simplify right side
    67,987.10x = 2,912,404,574.22
  5. Step 5: Solve for x
    x = 2,912,404,574.22/67,987.10
  6. Step 6: Final answer
    x = 42,837.61

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1.5x scale

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.