Home / 45,329.08-67,970.26-20,347.72

Finding the Fourth Proportional to 45,329.08, 67,970.26 and 20,347.72

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Solution

The fourth proportional to 45,329.08, 67,970.26 and 20,347.72 is: 30,511.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,329.08 : 67,970.26 = 20,347.72 : x
  2. Step 2: Convert to fraction form
    45,329.08/67,970.26 = 20,347.72/x
  3. Step 3: Cross multiply
    45,329.08x = 67,970.26 × 20,347.72
  4. Step 4: Simplify right side
    45,329.08x = 1,383,039,818.81
  5. Step 5: Solve for x
    x = 1,383,039,818.81/45,329.08
  6. Step 6: Final answer
    x = 30,511.09

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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.