Home / 105,620.26-145,755.94-57,875.40

Finding the Fourth Proportional to 105,620.26, 145,755.94 and 57,875.40

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Solution

The fourth proportional to 105,620.26, 145,755.94 and 57,875.40 is: 79,868.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,620.26 : 145,755.94 = 57,875.40 : x
  2. Step 2: Convert to fraction form
    105,620.26/145,755.94 = 57,875.40/x
  3. Step 3: Cross multiply
    105,620.26x = 145,755.94 × 57,875.40
  4. Step 4: Simplify right side
    105,620.26x = 8,435,683,329.88
  5. Step 5: Solve for x
    x = 8,435,683,329.88/105,620.26
  6. Step 6: Final answer
    x = 79,868.04

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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.