Home / 81,083.63-111,890.63-45,275.90

Finding the Fourth Proportional to 81,083.63, 111,890.63 and 45,275.90

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Solution

The fourth proportional to 81,083.63, 111,890.63 and 45,275.90 is: 62,478.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,083.63 : 111,890.63 = 45,275.90 : x
  2. Step 2: Convert to fraction form
    81,083.63/111,890.63 = 45,275.90/x
  3. Step 3: Cross multiply
    81,083.63x = 111,890.63 × 45,275.90
  4. Step 4: Simplify right side
    81,083.63x = 5,065,948,528.55
  5. Step 5: Solve for x
    x = 5,065,948,528.55/81,083.63
  6. Step 6: Final answer
    x = 62,478.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.