Home / 45,381.07-68,078.09-14,218.75

Finding the Fourth Proportional to 45,381.07, 68,078.09 and 14,218.75

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Solution

The fourth proportional to 45,381.07, 68,078.09 and 14,218.75 is: 21,330.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,381.07 : 68,078.09 = 14,218.75 : x
  2. Step 2: Convert to fraction form
    45,381.07/68,078.09 = 14,218.75/x
  3. Step 3: Cross multiply
    45,381.07x = 68,078.09 × 14,218.75
  4. Step 4: Simplify right side
    45,381.07x = 967,985,342.19
  5. Step 5: Solve for x
    x = 967,985,342.19/45,381.07
  6. Step 6: Final answer
    x = 21,330.16

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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.