Home / 74,438.40-111,427.20-43,180.80

Finding the Fourth Proportional to 74,438.40, 111,427.20 and 43,180.80

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Solution

The fourth proportional to 74,438.40, 111,427.20 and 43,180.80 is: 64,637.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,438.40 : 111,427.20 = 43,180.80 : x
  2. Step 2: Convert to fraction form
    74,438.40/111,427.20 = 43,180.80/x
  3. Step 3: Cross multiply
    74,438.40x = 111,427.20 × 43,180.80
  4. Step 4: Simplify right side
    74,438.40x = 4,811,515,637.76
  5. Step 5: Solve for x
    x = 4,811,515,637.76/74,438.40
  6. Step 6: Final answer
    x = 64,637.55

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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.