Home / 83,628.32-115,405.16-45,387.94

Finding the Fourth Proportional to 83,628.32, 115,405.16 and 45,387.94

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Solution

The fourth proportional to 83,628.32, 115,405.16 and 45,387.94 is: 62,634.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,628.32 : 115,405.16 = 45,387.94 : x
  2. Step 2: Convert to fraction form
    83,628.32/115,405.16 = 45,387.94/x
  3. Step 3: Cross multiply
    83,628.32x = 115,405.16 × 45,387.94
  4. Step 4: Simplify right side
    83,628.32x = 5,238,001,673.80
  5. Step 5: Solve for x
    x = 5,238,001,673.80/83,628.32
  6. Step 6: Final answer
    x = 62,634.30

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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.