Home / 81,124,905.72-111,957,862.55-45,830,469.54

Finding the Fourth Proportional to 81,124,905.72, 111,957,862.55 and 45,830,469.54

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Solution

The fourth proportional to 81,124,905.72, 111,957,862.55 and 45,830,469.54 is: 63,249,150.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,124,905.72 : 111,957,862.55 = 45,830,469.54 : x
  2. Step 2: Convert to fraction form
    81,124,905.72/111,957,862.55 = 45,830,469.54/x
  3. Step 3: Cross multiply
    81,124,905.72x = 111,957,862.55 × 45,830,469.54
  4. Step 4: Simplify right side
    81,124,905.72x = 5,131,081,409,361,281
  5. Step 5: Solve for x
    x = 5,131,081,409,361,281/81,124,905.72
  6. Step 6: Final answer
    x = 63,249,150.97

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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.