Home / 81,622,221.48-112,507,383.24-55,152,309.24

Finding the Fourth Proportional to 81,622,221.48, 112,507,383.24 and 55,152,309.24

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Solution

The fourth proportional to 81,622,221.48, 112,507,383.24 and 55,152,309.24 is: 76,021,478.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,622,221.48 : 112,507,383.24 = 55,152,309.24 : x
  2. Step 2: Convert to fraction form
    81,622,221.48/112,507,383.24 = 55,152,309.24/x
  3. Step 3: Cross multiply
    81,622,221.48x = 112,507,383.24 × 55,152,309.24
  4. Step 4: Simplify right side
    81,622,221.48x = 6,205,041,992,235,673
  5. Step 5: Solve for x
    x = 6,205,041,992,235,673/81,622,221.48
  6. Step 6: Final answer
    x = 76,021,478.95

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1.5x scale

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.