Home / 76,125.14-105,052.86-42,135.94

Finding the Fourth Proportional to 76,125.14, 105,052.86 and 42,135.94

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Solution

The fourth proportional to 76,125.14, 105,052.86 and 42,135.94 is: 58,147.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,125.14 : 105,052.86 = 42,135.94 : x
  2. Step 2: Convert to fraction form
    76,125.14/105,052.86 = 42,135.94/x
  3. Step 3: Cross multiply
    76,125.14x = 105,052.86 × 42,135.94
  4. Step 4: Simplify right side
    76,125.14x = 4,426,501,005.79
  5. Step 5: Solve for x
    x = 4,426,501,005.79/76,125.14
  6. Step 6: Final answer
    x = 58,147.69

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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.