Home / 53,971.13-80,957.21-20,683.28

Finding the Fourth Proportional to 53,971.13, 80,957.21 and 20,683.28

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Solution

The fourth proportional to 53,971.13, 80,957.21 and 20,683.28 is: 31,025.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,971.13 : 80,957.21 = 20,683.28 : x
  2. Step 2: Convert to fraction form
    53,971.13/80,957.21 = 20,683.28/x
  3. Step 3: Cross multiply
    53,971.13x = 80,957.21 × 20,683.28
  4. Step 4: Simplify right side
    53,971.13x = 1,674,460,134.25
  5. Step 5: Solve for x
    x = 1,674,460,134.25/53,971.13
  6. Step 6: Final answer
    x = 31,025.11

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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.