Home / 57,979.54-86,966.58-20,539.02

Finding the Fourth Proportional to 57,979.54, 86,966.58 and 20,539.02

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Solution

The fourth proportional to 57,979.54, 86,966.58 and 20,539.02 is: 30,807.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,979.54 : 86,966.58 = 20,539.02 : x
  2. Step 2: Convert to fraction form
    57,979.54/86,966.58 = 20,539.02/x
  3. Step 3: Cross multiply
    57,979.54x = 86,966.58 × 20,539.02
  4. Step 4: Simplify right side
    57,979.54x = 1,786,208,325.95
  5. Step 5: Solve for x
    x = 1,786,208,325.95/57,979.54
  6. Step 6: Final answer
    x = 30,807.56

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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.