Home / 105,527.07-145,631.01-57,780.74

Finding the Fourth Proportional to 105,527.07, 145,631.01 and 57,780.74

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Solution

The fourth proportional to 105,527.07, 145,631.01 and 57,780.74 is: 79,739.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,527.07 : 145,631.01 = 57,780.74 : x
  2. Step 2: Convert to fraction form
    105,527.07/145,631.01 = 57,780.74/x
  3. Step 3: Cross multiply
    105,527.07x = 145,631.01 × 57,780.74
  4. Step 4: Simplify right side
    105,527.07x = 8,414,667,524.75
  5. Step 5: Solve for x
    x = 8,414,667,524.75/105,527.07
  6. Step 6: Final answer
    x = 79,739.42

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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.