Home / 74,282.40-111,522.48-43,140

Finding the Fourth Proportional to 74,282.40, 111,522.48 and 43,140

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Solution

The fourth proportional to 74,282.40, 111,522.48 and 43,140 is: 64,767.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,282.40 : 111,522.48 = 43,140 : x
  2. Step 2: Convert to fraction form
    74,282.40/111,522.48 = 43,140/x
  3. Step 3: Cross multiply
    74,282.40x = 111,522.48 × 43,140
  4. Step 4: Simplify right side
    74,282.40x = 4,811,079,787.20
  5. Step 5: Solve for x
    x = 4,811,079,787.20/74,282.40
  6. Step 6: Final answer
    x = 64,767.43

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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.