Home / 76,542,122.88-105,640,243.20-45,620,228.16

Finding the Fourth Proportional to 76,542,122.88, 105,640,243.20 and 45,620,228.16

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Solution

The fourth proportional to 76,542,122.88, 105,640,243.20 and 45,620,228.16 is: 62,963,134.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,542,122.88 : 105,640,243.20 = 45,620,228.16 : x
  2. Step 2: Convert to fraction form
    76,542,122.88/105,640,243.20 = 45,620,228.16/x
  3. Step 3: Cross multiply
    76,542,122.88x = 105,640,243.20 × 45,620,228.16
  4. Step 4: Simplify right side
    76,542,122.88x = 4,819,331,997,661,888
  5. Step 5: Solve for x
    x = 4,819,331,997,661,888/76,542,122.88
  6. Step 6: Final answer
    x = 62,963,134.76

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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.