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Finding the Fourth Proportional to 73,390.34, 110,050.79 and 28,432.75

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Solution

The fourth proportional to 73,390.34, 110,050.79 and 28,432.75 is: 42,635.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,390.34 : 110,050.79 = 28,432.75 : x
  2. Step 2: Convert to fraction form
    73,390.34/110,050.79 = 28,432.75/x
  3. Step 3: Cross multiply
    73,390.34x = 110,050.79 × 28,432.75
  4. Step 4: Simplify right side
    73,390.34x = 3,129,046,599.37
  5. Step 5: Solve for x
    x = 3,129,046,599.37/73,390.34
  6. Step 6: Final answer
    x = 42,635.67

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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.