Home / 81,118.10-111,941.78-45,308.64

Finding the Fourth Proportional to 81,118.10, 111,941.78 and 45,308.64

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Solution

The fourth proportional to 81,118.10, 111,941.78 and 45,308.64 is: 62,525.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,118.10 : 111,941.78 = 45,308.64 : x
  2. Step 2: Convert to fraction form
    81,118.10/111,941.78 = 45,308.64/x
  3. Step 3: Cross multiply
    81,118.10x = 111,941.78 × 45,308.64
  4. Step 4: Simplify right side
    81,118.10x = 5,071,929,810.98
  5. Step 5: Solve for x
    x = 5,071,929,810.98/81,118.10
  6. Step 6: Final answer
    x = 62,525.25

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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.