Home / 74,554.02-111,699.78-66,418.38

Finding the Fourth Proportional to 74,554.02, 111,699.78 and 66,418.38

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Solution

The fourth proportional to 74,554.02, 111,699.78 and 66,418.38 is: 99,510.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,554.02 : 111,699.78 = 66,418.38 : x
  2. Step 2: Convert to fraction form
    74,554.02/111,699.78 = 66,418.38/x
  3. Step 3: Cross multiply
    74,554.02x = 111,699.78 × 66,418.38
  4. Step 4: Simplify right side
    74,554.02x = 7,418,918,433.96
  5. Step 5: Solve for x
    x = 7,418,918,433.96/74,554.02
  6. Step 6: Final answer
    x = 99,510.64

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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.