Home / 105,623.10-145,763.26-57,879.50

Finding the Fourth Proportional to 105,623.10, 145,763.26 and 57,879.50

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Solution

The fourth proportional to 105,623.10, 145,763.26 and 57,879.50 is: 79,875.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,623.10 : 145,763.26 = 57,879.50 : x
  2. Step 2: Convert to fraction form
    105,623.10/145,763.26 = 57,879.50/x
  3. Step 3: Cross multiply
    105,623.10x = 145,763.26 × 57,879.50
  4. Step 4: Simplify right side
    105,623.10x = 8,436,704,607.17
  5. Step 5: Solve for x
    x = 8,436,704,607.17/105,623.10
  6. Step 6: Final answer
    x = 79,875.56

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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.