Home / 30,272,138.40-45,408,207.60-12,311,997.60

Finding the Fourth Proportional to 30,272,138.40, 45,408,207.60 and 12,311,997.60

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Solution

The fourth proportional to 30,272,138.40, 45,408,207.60 and 12,311,997.60 is: 18,467,996.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,272,138.40 : 45,408,207.60 = 12,311,997.60 : x
  2. Step 2: Convert to fraction form
    30,272,138.40/45,408,207.60 = 12,311,997.60/x
  3. Step 3: Cross multiply
    30,272,138.40x = 45,408,207.60 × 12,311,997.60
  4. Step 4: Simplify right side
    30,272,138.40x = 559,065,742,991,501.75
  5. Step 5: Solve for x
    x = 559,065,742,991,501.75/30,272,138.40
  6. Step 6: Final answer
    x = 18,467,996.40

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Similar ratio
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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.