Home / 55,979.46-83,966.31-20,916.36

Finding the Fourth Proportional to 55,979.46, 83,966.31 and 20,916.36

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Solution

The fourth proportional to 55,979.46, 83,966.31 and 20,916.36 is: 31,373.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,979.46 : 83,966.31 = 20,916.36 : x
  2. Step 2: Convert to fraction form
    55,979.46/83,966.31 = 20,916.36/x
  3. Step 3: Cross multiply
    55,979.46x = 83,966.31 × 20,916.36
  4. Step 4: Simplify right side
    55,979.46x = 1,756,269,567.83
  5. Step 5: Solve for x
    x = 1,756,269,567.83/55,979.46
  6. Step 6: Final answer
    x = 31,373.46

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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.