Home / 105,621.20-145,760.61-57,877.47

Finding the Fourth Proportional to 105,621.20, 145,760.61 and 57,877.47

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Solution

The fourth proportional to 105,621.20, 145,760.61 and 57,877.47 is: 79,872.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,621.20 : 145,760.61 = 57,877.47 : x
  2. Step 2: Convert to fraction form
    105,621.20/145,760.61 = 57,877.47/x
  3. Step 3: Cross multiply
    105,621.20x = 145,760.61 × 57,877.47
  4. Step 4: Simplify right side
    105,621.20x = 8,436,255,549.50
  5. Step 5: Solve for x
    x = 8,436,255,549.50/105,621.20
  6. Step 6: Final answer
    x = 79,872.75

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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.