Home / 75,728.12-104,504.96-45,513.92

Finding the Fourth Proportional to 75,728.12, 104,504.96 and 45,513.92

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Solution

The fourth proportional to 75,728.12, 104,504.96 and 45,513.92 is: 62,809.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,728.12 : 104,504.96 = 45,513.92 : x
  2. Step 2: Convert to fraction form
    75,728.12/104,504.96 = 45,513.92/x
  3. Step 3: Cross multiply
    75,728.12x = 104,504.96 × 45,513.92
  4. Step 4: Simplify right side
    75,728.12x = 4,756,430,389.04
  5. Step 5: Solve for x
    x = 4,756,430,389.04/75,728.12
  6. Step 6: Final answer
    x = 62,809.30

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1.5x scale

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.