Home / 81,050.31-121,476.97-57,364.74

Finding the Fourth Proportional to 81,050.31, 121,476.97 and 57,364.74

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Solution

The fourth proportional to 81,050.31, 121,476.97 and 57,364.74 is: 85,977.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,050.31 : 121,476.97 = 57,364.74 : x
  2. Step 2: Convert to fraction form
    81,050.31/121,476.97 = 57,364.74/x
  3. Step 3: Cross multiply
    81,050.31x = 121,476.97 × 57,364.74
  4. Step 4: Simplify right side
    81,050.31x = 6,968,494,800.04
  5. Step 5: Solve for x
    x = 6,968,494,800.04/81,050.31
  6. Step 6: Final answer
    x = 85,977.40

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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.