Home / 30,620,448.60-45,930,672.90-20,920,666.20

Finding the Fourth Proportional to 30,620,448.60, 45,930,672.90 and 20,920,666.20

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Solution

The fourth proportional to 30,620,448.60, 45,930,672.90 and 20,920,666.20 is: 31,380,999.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,620,448.60 : 45,930,672.90 = 20,920,666.20 : x
  2. Step 2: Convert to fraction form
    30,620,448.60/45,930,672.90 = 20,920,666.20/x
  3. Step 3: Cross multiply
    30,620,448.60x = 45,930,672.90 × 20,920,666.20
  4. Step 4: Simplify right side
    30,620,448.60x = 960,900,276,082,285.88
  5. Step 5: Solve for x
    x = 960,900,276,082,285.88/30,620,448.60
  6. Step 6: Final answer
    x = 31,380,999.30

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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.