Home / 30,531,906.90-45,818,855.55-12,581,010.90

Finding the Fourth Proportional to 30,531,906.90, 45,818,855.55 and 12,581,010.90

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Solution

The fourth proportional to 30,531,906.90, 45,818,855.55 and 12,581,010.90 is: 18,880,167.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,531,906.90 : 45,818,855.55 = 12,581,010.90 : x
  2. Step 2: Convert to fraction form
    30,531,906.90/45,818,855.55 = 12,581,010.90/x
  3. Step 3: Cross multiply
    30,531,906.90x = 45,818,855.55 × 12,581,010.90
  4. Step 4: Simplify right side
    30,531,906.90x = 576,447,521,100,075.50
  5. Step 5: Solve for x
    x = 576,447,521,100,075.50/30,531,906.90
  6. Step 6: Final answer
    x = 18,880,167.66

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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.