Home / 81,124.12-111,940.20-45,309.58

Finding the Fourth Proportional to 81,124.12, 111,940.20 and 45,309.58

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Solution

The fourth proportional to 81,124.12, 111,940.20 and 45,309.58 is: 62,521.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,124.12 : 111,940.20 = 45,309.58 : x
  2. Step 2: Convert to fraction form
    81,124.12/111,940.20 = 45,309.58/x
  3. Step 3: Cross multiply
    81,124.12x = 111,940.20 × 45,309.58
  4. Step 4: Simplify right side
    81,124.12x = 5,071,963,447.12
  5. Step 5: Solve for x
    x = 5,071,963,447.12/81,124.12
  6. Step 6: Final answer
    x = 62,521.03

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1.5x scale

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.