Home / 81,086.10-111,904.34-45,275.36

Finding the Fourth Proportional to 81,086.10, 111,904.34 and 45,275.36

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Solution

The fourth proportional to 81,086.10, 111,904.34 and 45,275.36 is: 62,483.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,086.10 : 111,904.34 = 45,275.36 : x
  2. Step 2: Convert to fraction form
    81,086.10/111,904.34 = 45,275.36/x
  3. Step 3: Cross multiply
    81,086.10x = 111,904.34 × 45,275.36
  4. Step 4: Simplify right side
    81,086.10x = 5,066,508,493.16
  5. Step 5: Solve for x
    x = 5,066,508,493.16/81,086.10
  6. Step 6: Final answer
    x = 62,483.07

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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.