Home / 45,430.20-68,145.30-13,840.20

Finding the Fourth Proportional to 45,430.20, 68,145.30 and 13,840.20

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Solution

The fourth proportional to 45,430.20, 68,145.30 and 13,840.20 is: 20,760.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,430.20 : 68,145.30 = 13,840.20 : x
  2. Step 2: Convert to fraction form
    45,430.20/68,145.30 = 13,840.20/x
  3. Step 3: Cross multiply
    45,430.20x = 68,145.30 × 13,840.20
  4. Step 4: Simplify right side
    45,430.20x = 943,144,581.06
  5. Step 5: Solve for x
    x = 943,144,581.06/45,430.20
  6. Step 6: Final answer
    x = 20,760.30

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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.