Home / 80,457,828.40-120,686,742.60-19,873,554.40

Finding the Fourth Proportional to 80,457,828.40, 120,686,742.60 and 19,873,554.40

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Solution

The fourth proportional to 80,457,828.40, 120,686,742.60 and 19,873,554.40 is: 29,810,331.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,457,828.40 : 120,686,742.60 = 19,873,554.40 : x
  2. Step 2: Convert to fraction form
    80,457,828.40/120,686,742.60 = 19,873,554.40/x
  3. Step 3: Cross multiply
    80,457,828.40x = 120,686,742.60 × 19,873,554.40
  4. Step 4: Simplify right side
    80,457,828.40x = 2,398,474,544,419,897
  5. Step 5: Solve for x
    x = 2,398,474,544,419,897/80,457,828.40
  6. Step 6: Final answer
    x = 29,810,331.60

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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.