Home / 76,787.06-105,974.75-42,798.65

Finding the Fourth Proportional to 76,787.06, 105,974.75 and 42,798.65

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Solution

The fourth proportional to 76,787.06, 105,974.75 and 42,798.65 is: 59,066.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,787.06 : 105,974.75 = 42,798.65 : x
  2. Step 2: Convert to fraction form
    76,787.06/105,974.75 = 42,798.65/x
  3. Step 3: Cross multiply
    76,787.06x = 105,974.75 × 42,798.65
  4. Step 4: Simplify right side
    76,787.06x = 4,535,575,811.21
  5. Step 5: Solve for x
    x = 4,535,575,811.21/76,787.06
  6. Step 6: Final answer
    x = 59,066.93

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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.