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Finding the Fourth Proportional to 45,098.69, 67,648.48 and 20,140.00

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Solution

The fourth proportional to 45,098.69, 67,648.48 and 20,140.00 is: 30,210.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,098.69 : 67,648.48 = 20,140.00 : x
  2. Step 2: Convert to fraction form
    45,098.69/67,648.48 = 20,140.00/x
  3. Step 3: Cross multiply
    45,098.69x = 67,648.48 × 20,140.00
  4. Step 4: Simplify right side
    45,098.69x = 1,362,440,048.96
  5. Step 5: Solve for x
    x = 1,362,440,048.96/45,098.69
  6. Step 6: Final answer
    x = 30,210.19

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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.