Home / 90,548.40-135,835.54-28,223.76

Finding the Fourth Proportional to 90,548.40, 135,835.54 and 28,223.76

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Solution

The fourth proportional to 90,548.40, 135,835.54 and 28,223.76 is: 42,339.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,548.40 : 135,835.54 = 28,223.76 : x
  2. Step 2: Convert to fraction form
    90,548.40/135,835.54 = 28,223.76/x
  3. Step 3: Cross multiply
    90,548.40x = 135,835.54 × 28,223.76
  4. Step 4: Simplify right side
    90,548.40x = 3,833,789,680.43
  5. Step 5: Solve for x
    x = 3,833,789,680.43/90,548.40
  6. Step 6: Final answer
    x = 42,339.67

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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.