Home / 76,186.68-105,122.70-42,193.52

Finding the Fourth Proportional to 76,186.68, 105,122.70 and 42,193.52

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Solution

The fourth proportional to 76,186.68, 105,122.70 and 42,193.52 is: 58,218.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,186.68 : 105,122.70 = 42,193.52 : x
  2. Step 2: Convert to fraction form
    76,186.68/105,122.70 = 42,193.52/x
  3. Step 3: Cross multiply
    76,186.68x = 105,122.70 × 42,193.52
  4. Step 4: Simplify right side
    76,186.68x = 4,435,496,744.90
  5. Step 5: Solve for x
    x = 4,435,496,744.90/76,186.68
  6. Step 6: Final answer
    x = 58,218.80

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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.