Home / 39,870,739.13-55,021,642.07-21,536,024.63

Finding the Fourth Proportional to 39,870,739.13, 55,021,642.07 and 21,536,024.63

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Solution

The fourth proportional to 39,870,739.13, 55,021,642.07 and 21,536,024.63 is: 29,719,725.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,870,739.13 : 55,021,642.07 = 21,536,024.63 : x
  2. Step 2: Convert to fraction form
    39,870,739.13/55,021,642.07 = 21,536,024.63/x
  3. Step 3: Cross multiply
    39,870,739.13x = 55,021,642.07 × 21,536,024.63
  4. Step 4: Simplify right side
    39,870,739.13x = 1,184,947,438,419,775.75
  5. Step 5: Solve for x
    x = 1,184,947,438,419,775.75/39,870,739.13
  6. Step 6: Final answer
    x = 29,719,725.90

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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.