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Finding the Fourth Proportional to 74,416.50, 111,624.75 and 19,012.50

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Solution

The fourth proportional to 74,416.50, 111,624.75 and 19,012.50 is: 28,518.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,416.50 : 111,624.75 = 19,012.50 : x
  2. Step 2: Convert to fraction form
    74,416.50/111,624.75 = 19,012.50/x
  3. Step 3: Cross multiply
    74,416.50x = 111,624.75 × 19,012.50
  4. Step 4: Simplify right side
    74,416.50x = 2,122,265,559.38
  5. Step 5: Solve for x
    x = 2,122,265,559.38/74,416.50
  6. Step 6: Final answer
    x = 28,518.75

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1.5x scale

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.