Home / 76,792.47-105,979.77-42,811.96

Finding the Fourth Proportional to 76,792.47, 105,979.77 and 42,811.96

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Solution

The fourth proportional to 76,792.47, 105,979.77 and 42,811.96 is: 59,083.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,792.47 : 105,979.77 = 42,811.96 : x
  2. Step 2: Convert to fraction form
    76,792.47/105,979.77 = 42,811.96/x
  3. Step 3: Cross multiply
    76,792.47x = 105,979.77 × 42,811.96
  4. Step 4: Simplify right side
    76,792.47x = 4,537,201,409.10
  5. Step 5: Solve for x
    x = 4,537,201,409.10/76,792.47
  6. Step 6: Final answer
    x = 59,083.94

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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.