Home / 85,491,854.24-128,237,818.25-20,795,260.25

Finding the Fourth Proportional to 85,491,854.24, 128,237,818.25 and 20,795,260.25

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Solution

The fourth proportional to 85,491,854.24, 128,237,818.25 and 20,795,260.25 is: 31,192,899.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,491,854.24 : 128,237,818.25 = 20,795,260.25 : x
  2. Step 2: Convert to fraction form
    85,491,854.24/128,237,818.25 = 20,795,260.25/x
  3. Step 3: Cross multiply
    85,491,854.24x = 128,237,818.25 × 20,795,260.25
  4. Step 4: Simplify right side
    85,491,854.24x = 2,666,738,803,811,748.50
  5. Step 5: Solve for x
    x = 2,666,738,803,811,748.50/85,491,854.24
  6. Step 6: Final answer
    x = 31,192,899.34

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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.