Home / 76,353.09-105,363.70-42,361.21

Finding the Fourth Proportional to 76,353.09, 105,363.70 and 42,361.21

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Solution

The fourth proportional to 76,353.09, 105,363.70 and 42,361.21 is: 58,456.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,353.09 : 105,363.70 = 42,361.21 : x
  2. Step 2: Convert to fraction form
    76,353.09/105,363.70 = 42,361.21/x
  3. Step 3: Cross multiply
    76,353.09x = 105,363.70 × 42,361.21
  4. Step 4: Simplify right side
    76,353.09x = 4,463,333,822.08
  5. Step 5: Solve for x
    x = 4,463,333,822.08/76,353.09
  6. Step 6: Final answer
    x = 58,456.50

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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.