Home / 54,485.02-81,721.45-18,940.20

Finding the Fourth Proportional to 54,485.02, 81,721.45 and 18,940.20

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Solution

The fourth proportional to 54,485.02, 81,721.45 and 18,940.20 is: 28,408.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,485.02 : 81,721.45 = 18,940.20 : x
  2. Step 2: Convert to fraction form
    54,485.02/81,721.45 = 18,940.20/x
  3. Step 3: Cross multiply
    54,485.02x = 81,721.45 × 18,940.20
  4. Step 4: Simplify right side
    54,485.02x = 1,547,820,607.29
  5. Step 5: Solve for x
    x = 1,547,820,607.29/54,485.02
  6. Step 6: Final answer
    x = 28,408.19

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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.