Home / 57,979.16-86,969.34-18,535.40

Finding the Fourth Proportional to 57,979.16, 86,969.34 and 18,535.40

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Solution

The fourth proportional to 57,979.16, 86,969.34 and 18,535.40 is: 27,803.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,979.16 : 86,969.34 = 18,535.40 : x
  2. Step 2: Convert to fraction form
    57,979.16/86,969.34 = 18,535.40/x
  3. Step 3: Cross multiply
    57,979.16x = 86,969.34 × 18,535.40
  4. Step 4: Simplify right side
    57,979.16x = 1,612,011,504.64
  5. Step 5: Solve for x
    x = 1,612,011,504.64/57,979.16
  6. Step 6: Final answer
    x = 27,803.29

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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.