Home / 82,890,018.40-124,285,261.20-42,579,234.40

Finding the Fourth Proportional to 82,890,018.40, 124,285,261.20 and 42,579,234.40

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Solution

The fourth proportional to 82,890,018.40, 124,285,261.20 and 42,579,234.40 is: 63,843,287.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,890,018.40 : 124,285,261.20 = 42,579,234.40 : x
  2. Step 2: Convert to fraction form
    82,890,018.40/124,285,261.20 = 42,579,234.40/x
  3. Step 3: Cross multiply
    82,890,018.40x = 124,285,261.20 × 42,579,234.40
  4. Step 4: Simplify right side
    82,890,018.40x = 5,291,971,269,100,025
  5. Step 5: Solve for x
    x = 5,291,971,269,100,025/82,890,018.40
  6. Step 6: Final answer
    x = 63,843,287.42

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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.