Home / 85,394.90-128,111.55-26,233.30

Finding the Fourth Proportional to 85,394.90, 128,111.55 and 26,233.30

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Solution

The fourth proportional to 85,394.90, 128,111.55 and 26,233.30 is: 39,355.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,394.90 : 128,111.55 = 26,233.30 : x
  2. Step 2: Convert to fraction form
    85,394.90/128,111.55 = 26,233.30/x
  3. Step 3: Cross multiply
    85,394.90x = 128,111.55 × 26,233.30
  4. Step 4: Simplify right side
    85,394.90x = 3,360,788,724.62
  5. Step 5: Solve for x
    x = 3,360,788,724.62/85,394.90
  6. Step 6: Final answer
    x = 39,355.85

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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.