Home / 45,098.56-67,648.29-20,139.87

Finding the Fourth Proportional to 45,098.56, 67,648.29 and 20,139.87

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Solution

The fourth proportional to 45,098.56, 67,648.29 and 20,139.87 is: 30,210.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,098.56 : 67,648.29 = 20,139.87 : x
  2. Step 2: Convert to fraction form
    45,098.56/67,648.29 = 20,139.87/x
  3. Step 3: Cross multiply
    45,098.56x = 67,648.29 × 20,139.87
  4. Step 4: Simplify right side
    45,098.56x = 1,362,427,766.32
  5. Step 5: Solve for x
    x = 1,362,427,766.32/45,098.56
  6. Step 6: Final answer
    x = 30,210.01

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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.