Home / 51,186.21-70,634.10-28,215.28

Finding the Fourth Proportional to 51,186.21, 70,634.10 and 28,215.28

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Solution

The fourth proportional to 51,186.21, 70,634.10 and 28,215.28 is: 38,935.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,186.21 : 70,634.10 = 28,215.28 : x
  2. Step 2: Convert to fraction form
    51,186.21/70,634.10 = 28,215.28/x
  3. Step 3: Cross multiply
    51,186.21x = 70,634.10 × 28,215.28
  4. Step 4: Simplify right side
    51,186.21x = 1,992,960,909.05
  5. Step 5: Solve for x
    x = 1,992,960,909.05/51,186.21
  6. Step 6: Final answer
    x = 38,935.50

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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.