Home / 85,492-117,975.45-49,681.72

Finding the Fourth Proportional to 85,492, 117,975.45 and 49,681.72

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Solution

The fourth proportional to 85,492, 117,975.45 and 49,681.72 is: 68,558.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,492 : 117,975.45 = 49,681.72 : x
  2. Step 2: Convert to fraction form
    85,492/117,975.45 = 49,681.72/x
  3. Step 3: Cross multiply
    85,492x = 117,975.45 × 49,681.72
  4. Step 4: Simplify right side
    85,492x = 5,861,223,273.77
  5. Step 5: Solve for x
    x = 5,861,223,273.77/85,492
  6. Step 6: Final answer
    x = 68,558.73

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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.