Home / 82,701,038.20-124,051,557.30-81,425,579.80

Finding the Fourth Proportional to 82,701,038.20, 124,051,557.30 and 81,425,579.80

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Solution

The fourth proportional to 82,701,038.20, 124,051,557.30 and 81,425,579.80 is: 122,138,369.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,701,038.20 : 124,051,557.30 = 81,425,579.80 : x
  2. Step 2: Convert to fraction form
    82,701,038.20/124,051,557.30 = 81,425,579.80/x
  3. Step 3: Cross multiply
    82,701,038.20x = 124,051,557.30 × 81,425,579.80
  4. Step 4: Simplify right side
    82,701,038.20x = 10,100,969,978,245,422
  5. Step 5: Solve for x
    x = 10,100,969,978,245,422/82,701,038.20
  6. Step 6: Final answer
    x = 122,138,369.70

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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.