Home / 45,421.40-68,107.80-15,840.20

Finding the Fourth Proportional to 45,421.40, 68,107.80 and 15,840.20

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Solution

The fourth proportional to 45,421.40, 68,107.80 and 15,840.20 is: 23,751.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,421.40 : 68,107.80 = 15,840.20 : x
  2. Step 2: Convert to fraction form
    45,421.40/68,107.80 = 15,840.20/x
  3. Step 3: Cross multiply
    45,421.40x = 68,107.80 × 15,840.20
  4. Step 4: Simplify right side
    45,421.40x = 1,078,841,173.56
  5. Step 5: Solve for x
    x = 1,078,841,173.56/45,421.40
  6. Step 6: Final answer
    x = 23,751.83

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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.