Home / 78,717.28-108,636.24-45,185.44

Finding the Fourth Proportional to 78,717.28, 108,636.24 and 45,185.44

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Solution

The fourth proportional to 78,717.28, 108,636.24 and 45,185.44 is: 62,359.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,717.28 : 108,636.24 = 45,185.44 : x
  2. Step 2: Convert to fraction form
    78,717.28/108,636.24 = 45,185.44/x
  3. Step 3: Cross multiply
    78,717.28x = 108,636.24 × 45,185.44
  4. Step 4: Simplify right side
    78,717.28x = 4,908,776,304.35
  5. Step 5: Solve for x
    x = 4,908,776,304.35/78,717.28
  6. Step 6: Final answer
    x = 62,359.58

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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.