Home / 80,457,679.40-120,686,519.10-19,873,405.40

Finding the Fourth Proportional to 80,457,679.40, 120,686,519.10 and 19,873,405.40

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Solution

The fourth proportional to 80,457,679.40, 120,686,519.10 and 19,873,405.40 is: 29,810,108.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,457,679.40 : 120,686,519.10 = 19,873,405.40 : x
  2. Step 2: Convert to fraction form
    80,457,679.40/120,686,519.10 = 19,873,405.40/x
  3. Step 3: Cross multiply
    80,457,679.40x = 120,686,519.10 × 19,873,405.40
  4. Step 4: Simplify right side
    80,457,679.40x = 2,398,452,120,389,143
  5. Step 5: Solve for x
    x = 2,398,452,120,389,143/80,457,679.40
  6. Step 6: Final answer
    x = 29,810,108.10

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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.