Home / 81,054.84-121,594.41-28,455.06

Finding the Fourth Proportional to 81,054.84, 121,594.41 and 28,455.06

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Solution

The fourth proportional to 81,054.84, 121,594.41 and 28,455.06 is: 42,686.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,054.84 : 121,594.41 = 28,455.06 : x
  2. Step 2: Convert to fraction form
    81,054.84/121,594.41 = 28,455.06/x
  3. Step 3: Cross multiply
    81,054.84x = 121,594.41 × 28,455.06
  4. Step 4: Simplify right side
    81,054.84x = 3,459,976,232.21
  5. Step 5: Solve for x
    x = 3,459,976,232.21/81,054.84
  6. Step 6: Final answer
    x = 42,686.86

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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.