Home / 81,083.79-111,895.85-45,275.09

Finding the Fourth Proportional to 81,083.79, 111,895.85 and 45,275.09

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Solution

The fourth proportional to 81,083.79, 111,895.85 and 45,275.09 is: 62,479.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,083.79 : 111,895.85 = 45,275.09 : x
  2. Step 2: Convert to fraction form
    81,083.79/111,895.85 = 45,275.09/x
  3. Step 3: Cross multiply
    81,083.79x = 111,895.85 × 45,275.09
  4. Step 4: Simplify right side
    81,083.79x = 5,066,093,893.52
  5. Step 5: Solve for x
    x = 5,066,093,893.52/81,083.79
  6. Step 6: Final answer
    x = 62,479.74

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1.5x scale

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.