Home / 76,790.82-105,972.39-42,798.36

Finding the Fourth Proportional to 76,790.82, 105,972.39 and 42,798.36

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Solution

The fourth proportional to 76,790.82, 105,972.39 and 42,798.36 is: 59,062.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,790.82 : 105,972.39 = 42,798.36 : x
  2. Step 2: Convert to fraction form
    76,790.82/105,972.39 = 42,798.36/x
  3. Step 3: Cross multiply
    76,790.82x = 105,972.39 × 42,798.36
  4. Step 4: Simplify right side
    76,790.82x = 4,535,444,497.28
  5. Step 5: Solve for x
    x = 4,535,444,497.28/76,790.82
  6. Step 6: Final answer
    x = 59,062.33

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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.