Home / 81,243.42-112,117.32-45,429.54

Finding the Fourth Proportional to 81,243.42, 112,117.32 and 45,429.54

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Solution

The fourth proportional to 81,243.42, 112,117.32 and 45,429.54 is: 62,693.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,243.42 : 112,117.32 = 45,429.54 : x
  2. Step 2: Convert to fraction form
    81,243.42/112,117.32 = 45,429.54/x
  3. Step 3: Cross multiply
    81,243.42x = 112,117.32 × 45,429.54
  4. Step 4: Simplify right side
    81,243.42x = 5,093,438,273.63
  5. Step 5: Solve for x
    x = 5,093,438,273.63/81,243.42
  6. Step 6: Final answer
    x = 62,693.55

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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.