Home / 81,106.84-121,664.58-25,707.16

Finding the Fourth Proportional to 81,106.84, 121,664.58 and 25,707.16

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Solution

The fourth proportional to 81,106.84, 121,664.58 and 25,707.16 is: 38,562.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,106.84 : 121,664.58 = 25,707.16 : x
  2. Step 2: Convert to fraction form
    81,106.84/121,664.58 = 25,707.16/x
  3. Step 3: Cross multiply
    81,106.84x = 121,664.58 × 25,707.16
  4. Step 4: Simplify right side
    81,106.84x = 3,127,650,824.39
  5. Step 5: Solve for x
    x = 3,127,650,824.39/81,106.84
  6. Step 6: Final answer
    x = 38,562.11

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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.