Home / 89,860.80-123,968.34-54,030

Finding the Fourth Proportional to 89,860.80, 123,968.34 and 54,030

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Solution

The fourth proportional to 89,860.80, 123,968.34 and 54,030 is: 74,537.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,860.80 : 123,968.34 = 54,030 : x
  2. Step 2: Convert to fraction form
    89,860.80/123,968.34 = 54,030/x
  3. Step 3: Cross multiply
    89,860.80x = 123,968.34 × 54,030
  4. Step 4: Simplify right side
    89,860.80x = 6,698,009,410.20
  5. Step 5: Solve for x
    x = 6,698,009,410.20/89,860.80
  6. Step 6: Final answer
    x = 74,537.61

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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.