Home / 45,012.18-67,511.17-28,321.12

Finding the Fourth Proportional to 45,012.18, 67,511.17 and 28,321.12

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Solution

The fourth proportional to 45,012.18, 67,511.17 and 28,321.12 is: 42,477.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,012.18 : 67,511.17 = 28,321.12 : x
  2. Step 2: Convert to fraction form
    45,012.18/67,511.17 = 28,321.12/x
  3. Step 3: Cross multiply
    45,012.18x = 67,511.17 × 28,321.12
  4. Step 4: Simplify right side
    45,012.18x = 1,911,991,946.91
  5. Step 5: Solve for x
    x = 1,911,991,946.91/45,012.18
  6. Step 6: Final answer
    x = 42,477.21

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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.