Home / 55,471.08-83,239.44-20,435.40

Finding the Fourth Proportional to 55,471.08, 83,239.44 and 20,435.40

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Solution

The fourth proportional to 55,471.08, 83,239.44 and 20,435.40 is: 30,665.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,471.08 : 83,239.44 = 20,435.40 : x
  2. Step 2: Convert to fraction form
    55,471.08/83,239.44 = 20,435.40/x
  3. Step 3: Cross multiply
    55,471.08x = 83,239.44 × 20,435.40
  4. Step 4: Simplify right side
    55,471.08x = 1,701,031,252.18
  5. Step 5: Solve for x
    x = 1,701,031,252.18/55,471.08
  6. Step 6: Final answer
    x = 30,665.19

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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.