Home / 83,821.02-115,720.83-55,564.98

Finding the Fourth Proportional to 83,821.02, 115,720.83 and 55,564.98

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Solution

The fourth proportional to 83,821.02, 115,720.83 and 55,564.98 is: 76,711.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,821.02 : 115,720.83 = 55,564.98 : x
  2. Step 2: Convert to fraction form
    83,821.02/115,720.83 = 55,564.98/x
  3. Step 3: Cross multiply
    83,821.02x = 115,720.83 × 55,564.98
  4. Step 4: Simplify right side
    83,821.02x = 6,430,025,604.53
  5. Step 5: Solve for x
    x = 6,430,025,604.53/83,821.02
  6. Step 6: Final answer
    x = 76,711.37

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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.