Home / 57,870.08-86,812.09-20,422.42

Finding the Fourth Proportional to 57,870.08, 86,812.09 and 20,422.42

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Solution

The fourth proportional to 57,870.08, 86,812.09 and 20,422.42 is: 30,636.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,870.08 : 86,812.09 = 20,422.42 : x
  2. Step 2: Convert to fraction form
    57,870.08/86,812.09 = 20,422.42/x
  3. Step 3: Cross multiply
    57,870.08x = 86,812.09 × 20,422.42
  4. Step 4: Simplify right side
    57,870.08x = 1,772,912,963.06
  5. Step 5: Solve for x
    x = 1,772,912,963.06/57,870.08
  6. Step 6: Final answer
    x = 30,636.09

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1.5x scale

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.