Home / 81,315.60-121,973.40-41,949.60

Finding the Fourth Proportional to 81,315.60, 121,973.40 and 41,949.60

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Solution

The fourth proportional to 81,315.60, 121,973.40 and 41,949.60 is: 62,924.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,315.60 : 121,973.40 = 41,949.60 : x
  2. Step 2: Convert to fraction form
    81,315.60/121,973.40 = 41,949.60/x
  3. Step 3: Cross multiply
    81,315.60x = 121,973.40 × 41,949.60
  4. Step 4: Simplify right side
    81,315.60x = 5,116,735,340.64
  5. Step 5: Solve for x
    x = 5,116,735,340.64/81,315.60
  6. Step 6: Final answer
    x = 62,924.40

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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.