Home / 57,802.45-86,728.71-20,389.27

Finding the Fourth Proportional to 57,802.45, 86,728.71 and 20,389.27

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Solution

The fourth proportional to 57,802.45, 86,728.71 and 20,389.27 is: 30,592.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,802.45 : 86,728.71 = 20,389.27 : x
  2. Step 2: Convert to fraction form
    57,802.45/86,728.71 = 20,389.27/x
  3. Step 3: Cross multiply
    57,802.45x = 86,728.71 × 20,389.27
  4. Step 4: Simplify right side
    57,802.45x = 1,768,335,084.94
  5. Step 5: Solve for x
    x = 1,768,335,084.94/57,802.45
  6. Step 6: Final answer
    x = 30,592.74

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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.