Home / 28,083,904.20-42,157,349.10-21,722,358.60

Finding the Fourth Proportional to 28,083,904.20, 42,157,349.10 and 21,722,358.60

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Solution

The fourth proportional to 28,083,904.20, 42,157,349.10 and 21,722,358.60 is: 32,607,896.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,083,904.20 : 42,157,349.10 = 21,722,358.60 : x
  2. Step 2: Convert to fraction form
    28,083,904.20/42,157,349.10 = 21,722,358.60/x
  3. Step 3: Cross multiply
    28,083,904.20x = 42,157,349.10 × 21,722,358.60
  4. Step 4: Simplify right side
    28,083,904.20x = 915,757,054,775,587.38
  5. Step 5: Solve for x
    x = 915,757,054,775,587.38/28,083,904.20
  6. Step 6: Final answer
    x = 32,607,896.97

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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.