Home / 76,792.14-105,979.28-42,811.56

Finding the Fourth Proportional to 76,792.14, 105,979.28 and 42,811.56

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Solution

The fourth proportional to 76,792.14, 105,979.28 and 42,811.56 is: 59,083.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,792.14 : 105,979.28 = 42,811.56 : x
  2. Step 2: Convert to fraction form
    76,792.14/105,979.28 = 42,811.56/x
  3. Step 3: Cross multiply
    76,792.14x = 105,979.28 × 42,811.56
  4. Step 4: Simplify right side
    76,792.14x = 4,537,138,090.42
  5. Step 5: Solve for x
    x = 4,537,138,090.42/76,792.14
  6. Step 6: Final answer
    x = 59,083.37

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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.