Home / 57,389.12-86,100.96-20,456

Finding the Fourth Proportional to 57,389.12, 86,100.96 and 20,456

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Solution

The fourth proportional to 57,389.12, 86,100.96 and 20,456 is: 30,690.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,389.12 : 86,100.96 = 20,456 : x
  2. Step 2: Convert to fraction form
    57,389.12/86,100.96 = 20,456/x
  3. Step 3: Cross multiply
    57,389.12x = 86,100.96 × 20,456
  4. Step 4: Simplify right side
    57,389.12x = 1,761,281,237.76
  5. Step 5: Solve for x
    x = 1,761,281,237.76/57,389.12
  6. Step 6: Final answer
    x = 30,690.16

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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.