Home / 45,403.51-68,104.53-20,425.89

Finding the Fourth Proportional to 45,403.51, 68,104.53 and 20,425.89

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Solution

The fourth proportional to 45,403.51, 68,104.53 and 20,425.89 is: 30,638.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,403.51 : 68,104.53 = 20,425.89 : x
  2. Step 2: Convert to fraction form
    45,403.51/68,104.53 = 20,425.89/x
  3. Step 3: Cross multiply
    45,403.51x = 68,104.53 × 20,425.89
  4. Step 4: Simplify right side
    45,403.51x = 1,391,095,638.28
  5. Step 5: Solve for x
    x = 1,391,095,638.28/45,403.51
  6. Step 6: Final answer
    x = 30,638.50

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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.