Home / 28,239,621.80-42,365,337.60-9,072,316.40

Finding the Fourth Proportional to 28,239,621.80, 42,365,337.60 and 9,072,316.40

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Solution

The fourth proportional to 28,239,621.80, 42,365,337.60 and 9,072,316.40 is: 13,610,371.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,239,621.80 : 42,365,337.60 = 9,072,316.40 : x
  2. Step 2: Convert to fraction form
    28,239,621.80/42,365,337.60 = 9,072,316.40/x
  3. Step 3: Cross multiply
    28,239,621.80x = 42,365,337.60 × 9,072,316.40
  4. Step 4: Simplify right side
    28,239,621.80x = 384,351,747,100,016.69
  5. Step 5: Solve for x
    x = 384,351,747,100,016.69/28,239,621.80
  6. Step 6: Final answer
    x = 13,610,371.62

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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.