Home / 105,449.76-145,520.68-57,703.10

Finding the Fourth Proportional to 105,449.76, 145,520.68 and 57,703.10

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Solution

The fourth proportional to 105,449.76, 145,520.68 and 57,703.10 is: 79,630.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,449.76 : 145,520.68 = 57,703.10 : x
  2. Step 2: Convert to fraction form
    105,449.76/145,520.68 = 57,703.10/x
  3. Step 3: Cross multiply
    105,449.76x = 145,520.68 × 57,703.10
  4. Step 4: Simplify right side
    105,449.76x = 8,396,994,350.11
  5. Step 5: Solve for x
    x = 8,396,994,350.11/105,449.76
  6. Step 6: Final answer
    x = 79,630.28

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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.