Home / 81,629.40-112,659.94-45,339

Finding the Fourth Proportional to 81,629.40, 112,659.94 and 45,339

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Solution

The fourth proportional to 81,629.40, 112,659.94 and 45,339 is: 62,574.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,629.40 : 112,659.94 = 45,339 : x
  2. Step 2: Convert to fraction form
    81,629.40/112,659.94 = 45,339/x
  3. Step 3: Cross multiply
    81,629.40x = 112,659.94 × 45,339
  4. Step 4: Simplify right side
    81,629.40x = 5,107,889,019.66
  5. Step 5: Solve for x
    x = 5,107,889,019.66/81,629.40
  6. Step 6: Final answer
    x = 62,574.13

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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.