Home / 105,621.26-145,757.32-57,876.40

Finding the Fourth Proportional to 105,621.26, 145,757.32 and 57,876.40

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Solution

The fourth proportional to 105,621.26, 145,757.32 and 57,876.40 is: 79,869.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,621.26 : 145,757.32 = 57,876.40 : x
  2. Step 2: Convert to fraction form
    105,621.26/145,757.32 = 57,876.40/x
  3. Step 3: Cross multiply
    105,621.26x = 145,757.32 × 57,876.40
  4. Step 4: Simplify right side
    105,621.26x = 8,435,908,955.25
  5. Step 5: Solve for x
    x = 8,435,908,955.25/105,621.26
  6. Step 6: Final answer
    x = 79,869.42

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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.