Home / 57,852.48-86,792.57-20,420.96

Finding the Fourth Proportional to 57,852.48, 86,792.57 and 20,420.96

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Solution

The fourth proportional to 57,852.48, 86,792.57 and 20,420.96 is: 30,636.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,852.48 : 86,792.57 = 20,420.96 : x
  2. Step 2: Convert to fraction form
    57,852.48/86,792.57 = 20,420.96/x
  3. Step 3: Cross multiply
    57,852.48x = 86,792.57 × 20,420.96
  4. Step 4: Simplify right side
    57,852.48x = 1,772,387,064.20
  5. Step 5: Solve for x
    x = 1,772,387,064.20/57,852.48
  6. Step 6: Final answer
    x = 30,636.32

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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.