Home / 28,608,086.40-42,912,129.60-7,042,516.80

Finding the Fourth Proportional to 28,608,086.40, 42,912,129.60 and 7,042,516.80

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Solution

The fourth proportional to 28,608,086.40, 42,912,129.60 and 7,042,516.80 is: 10,563,775.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,608,086.40 : 42,912,129.60 = 7,042,516.80 : x
  2. Step 2: Convert to fraction form
    28,608,086.40/42,912,129.60 = 7,042,516.80/x
  3. Step 3: Cross multiply
    28,608,086.40x = 42,912,129.60 × 7,042,516.80
  4. Step 4: Simplify right side
    28,608,086.40x = 302,209,393,631,777.31
  5. Step 5: Solve for x
    x = 302,209,393,631,777.31/28,608,086.40
  6. Step 6: Final answer
    x = 10,563,775.20

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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.