Home / 42,126,007.20-63,189,010.80-21,718,672.80

Finding the Fourth Proportional to 42,126,007.20, 63,189,010.80 and 21,718,672.80

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Solution

The fourth proportional to 42,126,007.20, 63,189,010.80 and 21,718,672.80 is: 32,578,009.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,126,007.20 : 63,189,010.80 = 21,718,672.80 : x
  2. Step 2: Convert to fraction form
    42,126,007.20/63,189,010.80 = 21,718,672.80/x
  3. Step 3: Cross multiply
    42,126,007.20x = 63,189,010.80 × 21,718,672.80
  4. Step 4: Simplify right side
    42,126,007.20x = 1,372,381,450,120,866.25
  5. Step 5: Solve for x
    x = 1,372,381,450,120,866.25/42,126,007.20
  6. Step 6: Final answer
    x = 32,578,009.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.