Home / 54,116.16-81,136.08-20,808.24

Finding the Fourth Proportional to 54,116.16, 81,136.08 and 20,808.24

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Solution

The fourth proportional to 54,116.16, 81,136.08 and 20,808.24 is: 31,197.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,116.16 : 81,136.08 = 20,808.24 : x
  2. Step 2: Convert to fraction form
    54,116.16/81,136.08 = 20,808.24/x
  3. Step 3: Cross multiply
    54,116.16x = 81,136.08 × 20,808.24
  4. Step 4: Simplify right side
    54,116.16x = 1,688,299,025.30
  5. Step 5: Solve for x
    x = 1,688,299,025.30/54,116.16
  6. Step 6: Final answer
    x = 31,197.69

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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.