Home / 76,769.03-105,937.79-42,781.23

Finding the Fourth Proportional to 76,769.03, 105,937.79 and 42,781.23

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Solution

The fourth proportional to 76,769.03, 105,937.79 and 42,781.23 is: 59,036.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,769.03 : 105,937.79 = 42,781.23 : x
  2. Step 2: Convert to fraction form
    76,769.03/105,937.79 = 42,781.23/x
  3. Step 3: Cross multiply
    76,769.03x = 105,937.79 × 42,781.23
  4. Step 4: Simplify right side
    76,769.03x = 4,532,148,745.78
  5. Step 5: Solve for x
    x = 4,532,148,745.78/76,769.03
  6. Step 6: Final answer
    x = 59,036.16

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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.