Home / 105,621.69-145,757.10-57,874.92

Finding the Fourth Proportional to 105,621.69, 145,757.10 and 57,874.92

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Solution

The fourth proportional to 105,621.69, 145,757.10 and 57,874.92 is: 79,866.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,621.69 : 145,757.10 = 57,874.92 : x
  2. Step 2: Convert to fraction form
    105,621.69/145,757.10 = 57,874.92/x
  3. Step 3: Cross multiply
    105,621.69x = 145,757.10 × 57,874.92
  4. Step 4: Simplify right side
    105,621.69x = 8,435,680,501.93
  5. Step 5: Solve for x
    x = 8,435,680,501.93/105,621.69
  6. Step 6: Final answer
    x = 79,866.93

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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.