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Finding the Fourth Proportional to 74,958.60, 112,394.70 and 28,216.20

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Solution

The fourth proportional to 74,958.60, 112,394.70 and 28,216.20 is: 42,308.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,958.60 : 112,394.70 = 28,216.20 : x
  2. Step 2: Convert to fraction form
    74,958.60/112,394.70 = 28,216.20/x
  3. Step 3: Cross multiply
    74,958.60x = 112,394.70 × 28,216.20
  4. Step 4: Simplify right side
    74,958.60x = 3,171,351,334.14
  5. Step 5: Solve for x
    x = 3,171,351,334.14/74,958.60
  6. Step 6: Final answer
    x = 42,308.04

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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.