Home / 31,314,664.81-43,195,135.30-20,718,037.45

Finding the Fourth Proportional to 31,314,664.81, 43,195,135.30 and 20,718,037.45

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Solution

The fourth proportional to 31,314,664.81, 43,195,135.30 and 20,718,037.45 is: 28,578,253.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,314,664.81 : 43,195,135.30 = 20,718,037.45 : x
  2. Step 2: Convert to fraction form
    31,314,664.81/43,195,135.30 = 20,718,037.45/x
  3. Step 3: Cross multiply
    31,314,664.81x = 43,195,135.30 × 20,718,037.45
  4. Step 4: Simplify right side
    31,314,664.81x = 894,918,430,803,216.88
  5. Step 5: Solve for x
    x = 894,918,430,803,216.88/31,314,664.81
  6. Step 6: Final answer
    x = 28,578,253.55

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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.