Home / 81,113.09-111,934.89-45,303.62

Finding the Fourth Proportional to 81,113.09, 111,934.89 and 45,303.62

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Solution

The fourth proportional to 81,113.09, 111,934.89 and 45,303.62 is: 62,518.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,113.09 : 111,934.89 = 45,303.62 : x
  2. Step 2: Convert to fraction form
    81,113.09/111,934.89 = 45,303.62/x
  3. Step 3: Cross multiply
    81,113.09x = 111,934.89 × 45,303.62
  4. Step 4: Simplify right side
    81,113.09x = 5,071,055,161.63
  5. Step 5: Solve for x
    x = 5,071,055,161.63/81,113.09
  6. Step 6: Final answer
    x = 62,518.34

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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.