Home / 81,947.76-122,969.40-34,559.92

Finding the Fourth Proportional to 81,947.76, 122,969.40 and 34,559.92

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Solution

The fourth proportional to 81,947.76, 122,969.40 and 34,559.92 is: 51,860.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,947.76 : 122,969.40 = 34,559.92 : x
  2. Step 2: Convert to fraction form
    81,947.76/122,969.40 = 34,559.92/x
  3. Step 3: Cross multiply
    81,947.76x = 122,969.40 × 34,559.92
  4. Step 4: Simplify right side
    81,947.76x = 4,249,812,626.45
  5. Step 5: Solve for x
    x = 4,249,812,626.45/81,947.76
  6. Step 6: Final answer
    x = 51,860.02

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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.