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Finding the Fourth Proportional to 45,170.52, 67,759.95 and 11,890.76

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Solution

The fourth proportional to 45,170.52, 67,759.95 and 11,890.76 is: 17,837.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,170.52 : 67,759.95 = 11,890.76 : x
  2. Step 2: Convert to fraction form
    45,170.52/67,759.95 = 11,890.76/x
  3. Step 3: Cross multiply
    45,170.52x = 67,759.95 × 11,890.76
  4. Step 4: Simplify right side
    45,170.52x = 805,717,303.06
  5. Step 5: Solve for x
    x = 805,717,303.06/45,170.52
  6. Step 6: Final answer
    x = 17,837.24

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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.