Home / 76,171.18-105,115.96-42,637.18

Finding the Fourth Proportional to 76,171.18, 105,115.96 and 42,637.18

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Solution

The fourth proportional to 76,171.18, 105,115.96 and 42,637.18 is: 58,839.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,171.18 : 105,115.96 = 42,637.18 : x
  2. Step 2: Convert to fraction form
    76,171.18/105,115.96 = 42,637.18/x
  3. Step 3: Cross multiply
    76,171.18x = 105,115.96 × 42,637.18
  4. Step 4: Simplify right side
    76,171.18x = 4,481,848,107.39
  5. Step 5: Solve for x
    x = 4,481,848,107.39/76,171.18
  6. Step 6: Final answer
    x = 58,839.16

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1.5x scale

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.