Home / 38,689,157.78-53,391,035.49-21,285,129.23

Finding the Fourth Proportional to 38,689,157.78, 53,391,035.49 and 21,285,129.23

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Solution

The fourth proportional to 38,689,157.78, 53,391,035.49 and 21,285,129.23 is: 29,373,477.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,689,157.78 : 53,391,035.49 = 21,285,129.23 : x
  2. Step 2: Convert to fraction form
    38,689,157.78/53,391,035.49 = 21,285,129.23/x
  3. Step 3: Cross multiply
    38,689,157.78x = 53,391,035.49 × 21,285,129.23
  4. Step 4: Simplify right side
    38,689,157.78x = 1,136,435,090,128,166.50
  5. Step 5: Solve for x
    x = 1,136,435,090,128,166.50/38,689,157.78
  6. Step 6: Final answer
    x = 29,373,477.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.