Home / 81,146-111,977.16-45,337.52

Finding the Fourth Proportional to 81,146, 111,977.16 and 45,337.52

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Solution

The fourth proportional to 81,146, 111,977.16 and 45,337.52 is: 62,563.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,146 : 111,977.16 = 45,337.52 : x
  2. Step 2: Convert to fraction form
    81,146/111,977.16 = 45,337.52/x
  3. Step 3: Cross multiply
    81,146x = 111,977.16 × 45,337.52
  4. Step 4: Simplify right side
    81,146x = 5,076,766,731.04
  5. Step 5: Solve for x
    x = 5,076,766,731.04/81,146
  6. Step 6: Final answer
    x = 62,563.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.