Home / 81,686.04-112,713.51-51,055.53

Finding the Fourth Proportional to 81,686.04, 112,713.51 and 51,055.53

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Solution

The fourth proportional to 81,686.04, 112,713.51 and 51,055.53 is: 70,448.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,686.04 : 112,713.51 = 51,055.53 : x
  2. Step 2: Convert to fraction form
    81,686.04/112,713.51 = 51,055.53/x
  3. Step 3: Cross multiply
    81,686.04x = 112,713.51 × 51,055.53
  4. Step 4: Simplify right side
    81,686.04x = 5,754,647,991.21
  5. Step 5: Solve for x
    x = 5,754,647,991.21/81,686.04
  6. Step 6: Final answer
    x = 70,448.37

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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.