Home / 28,055,287.20-42,082,930.80-7,857,904.80

Finding the Fourth Proportional to 28,055,287.20, 42,082,930.80 and 7,857,904.80

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Solution

The fourth proportional to 28,055,287.20, 42,082,930.80 and 7,857,904.80 is: 11,786,857.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,055,287.20 : 42,082,930.80 = 7,857,904.80 : x
  2. Step 2: Convert to fraction form
    28,055,287.20/42,082,930.80 = 7,857,904.80/x
  3. Step 3: Cross multiply
    28,055,287.20x = 42,082,930.80 × 7,857,904.80
  4. Step 4: Simplify right side
    28,055,287.20x = 330,683,663,931,387.81
  5. Step 5: Solve for x
    x = 330,683,663,931,387.81/28,055,287.20
  6. Step 6: Final answer
    x = 11,786,857.20

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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.