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Finding the Fourth Proportional to 28,041,101.80, 41,968,340.70 and 20,342,861.80

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Solution

The fourth proportional to 28,041,101.80, 41,968,340.70 and 20,342,861.80 is: 30,446,598.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,041,101.80 : 41,968,340.70 = 20,342,861.80 : x
  2. Step 2: Convert to fraction form
    28,041,101.80/41,968,340.70 = 20,342,861.80/x
  3. Step 3: Cross multiply
    28,041,101.80x = 41,968,340.70 × 20,342,861.80
  4. Step 4: Simplify right side
    28,041,101.80x = 853,756,154,835,415.38
  5. Step 5: Solve for x
    x = 853,756,154,835,415.38/28,041,101.80
  6. Step 6: Final answer
    x = 30,446,598.03

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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.