Home / 81,380.03-112,305.92-45,570.65

Finding the Fourth Proportional to 81,380.03, 112,305.92 and 45,570.65

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Solution

The fourth proportional to 81,380.03, 112,305.92 and 45,570.65 is: 62,888.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,380.03 : 112,305.92 = 45,570.65 : x
  2. Step 2: Convert to fraction form
    81,380.03/112,305.92 = 45,570.65/x
  3. Step 3: Cross multiply
    81,380.03x = 112,305.92 × 45,570.65
  4. Step 4: Simplify right side
    81,380.03x = 5,117,852,983.87
  5. Step 5: Solve for x
    x = 5,117,852,983.87/81,380.03
  6. Step 6: Final answer
    x = 62,888.32

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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.