Home / 81,129,194.55-111,958,386.91-43,959,445.49

Finding the Fourth Proportional to 81,129,194.55, 111,958,386.91 and 43,959,445.49

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Solution

The fourth proportional to 81,129,194.55, 111,958,386.91 and 43,959,445.49 is: 60,664,088.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,129,194.55 : 111,958,386.91 = 43,959,445.49 : x
  2. Step 2: Convert to fraction form
    81,129,194.55/111,958,386.91 = 43,959,445.49/x
  3. Step 3: Cross multiply
    81,129,194.55x = 111,958,386.91 × 43,959,445.49
  4. Step 4: Simplify right side
    81,129,194.55x = 4,921,628,606,688,472
  5. Step 5: Solve for x
    x = 4,921,628,606,688,472/81,129,194.55
  6. Step 6: Final answer
    x = 60,664,088.11

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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.