Home / 45,099.18-67,649.23-20,140.50

Finding the Fourth Proportional to 45,099.18, 67,649.23 and 20,140.50

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Solution

The fourth proportional to 45,099.18, 67,649.23 and 20,140.50 is: 30,210.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,099.18 : 67,649.23 = 20,140.50 : x
  2. Step 2: Convert to fraction form
    45,099.18/67,649.23 = 20,140.50/x
  3. Step 3: Cross multiply
    45,099.18x = 67,649.23 × 20,140.50
  4. Step 4: Simplify right side
    45,099.18x = 1,362,489,316.82
  5. Step 5: Solve for x
    x = 1,362,489,316.82/45,099.18
  6. Step 6: Final answer
    x = 30,210.96

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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.