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Finding the Fourth Proportional to 45,453, 68,190.48 and 14,288.16

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Solution

The fourth proportional to 45,453, 68,190.48 and 14,288.16 is: 21,435.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,453 : 68,190.48 = 14,288.16 : x
  2. Step 2: Convert to fraction form
    45,453/68,190.48 = 14,288.16/x
  3. Step 3: Cross multiply
    45,453x = 68,190.48 × 14,288.16
  4. Step 4: Simplify right side
    45,453x = 974,316,488.72
  5. Step 5: Solve for x
    x = 974,316,488.72/45,453
  6. Step 6: Final answer
    x = 21,435.69

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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.