Home / 45,538.81-68,308.21-20,574.20

Finding the Fourth Proportional to 45,538.81, 68,308.21 and 20,574.20

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Solution

The fourth proportional to 45,538.81, 68,308.21 and 20,574.20 is: 30,861.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,538.81 : 68,308.21 = 20,574.20 : x
  2. Step 2: Convert to fraction form
    45,538.81/68,308.21 = 20,574.20/x
  3. Step 3: Cross multiply
    45,538.81x = 68,308.21 × 20,574.20
  4. Step 4: Simplify right side
    45,538.81x = 1,405,386,970.67
  5. Step 5: Solve for x
    x = 1,405,386,970.67/45,538.81
  6. Step 6: Final answer
    x = 30,861.30

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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.