Home / 80,885,855.10-121,328,782.65-76,740,615.30

Finding the Fourth Proportional to 80,885,855.10, 121,328,782.65 and 76,740,615.30

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Solution

The fourth proportional to 80,885,855.10, 121,328,782.65 and 76,740,615.30 is: 115,110,922.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,885,855.10 : 121,328,782.65 = 76,740,615.30 : x
  2. Step 2: Convert to fraction form
    80,885,855.10/121,328,782.65 = 76,740,615.30/x
  3. Step 3: Cross multiply
    80,885,855.10x = 121,328,782.65 × 76,740,615.30
  4. Step 4: Simplify right side
    80,885,855.10x = 9,310,845,434,160,964
  5. Step 5: Solve for x
    x = 9,310,845,434,160,964/80,885,855.10
  6. Step 6: Final answer
    x = 115,110,922.95

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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.