Home / 81,492,514.60-122,238,771.90-20,908,240.60

Finding the Fourth Proportional to 81,492,514.60, 122,238,771.90 and 20,908,240.60

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Solution

The fourth proportional to 81,492,514.60, 122,238,771.90 and 20,908,240.60 is: 31,362,360.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,492,514.60 : 122,238,771.90 = 20,908,240.60 : x
  2. Step 2: Convert to fraction form
    81,492,514.60/122,238,771.90 = 20,908,240.60/x
  3. Step 3: Cross multiply
    81,492,514.60x = 122,238,771.90 × 20,908,240.60
  4. Step 4: Simplify right side
    81,492,514.60x = 2,555,797,653,533,719.50
  5. Step 5: Solve for x
    x = 2,555,797,653,533,719.50/81,492,514.60
  6. Step 6: Final answer
    x = 31,362,360.90

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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.