Home / 76,720.86-105,930.45-66,092.04

Finding the Fourth Proportional to 76,720.86, 105,930.45 and 66,092.04

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Solution

The fourth proportional to 76,720.86, 105,930.45 and 66,092.04 is: 91,254.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,720.86 : 105,930.45 = 66,092.04 : x
  2. Step 2: Convert to fraction form
    76,720.86/105,930.45 = 66,092.04/x
  3. Step 3: Cross multiply
    76,720.86x = 105,930.45 × 66,092.04
  4. Step 4: Simplify right side
    76,720.86x = 7,001,159,538.62
  5. Step 5: Solve for x
    x = 7,001,159,538.62/76,720.86
  6. Step 6: Final answer
    x = 91,254.97

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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.