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Finding the Fourth Proportional to 45,867.69, 68,801.63 and 12,588.21

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Solution

The fourth proportional to 45,867.69, 68,801.63 and 12,588.21 is: 18,882.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,867.69 : 68,801.63 = 12,588.21 : x
  2. Step 2: Convert to fraction form
    45,867.69/68,801.63 = 12,588.21/x
  3. Step 3: Cross multiply
    45,867.69x = 68,801.63 × 12,588.21
  4. Step 4: Simplify right side
    45,867.69x = 866,089,303.84
  5. Step 5: Solve for x
    x = 866,089,303.84/45,867.69
  6. Step 6: Final answer
    x = 18,882.34

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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.