Home / 85,492.50-117,979.70-47,766.75

Finding the Fourth Proportional to 85,492.50, 117,979.70 and 47,766.75

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Solution

The fourth proportional to 85,492.50, 117,979.70 and 47,766.75 is: 65,918.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,492.50 : 117,979.70 = 47,766.75 : x
  2. Step 2: Convert to fraction form
    85,492.50/117,979.70 = 47,766.75/x
  3. Step 3: Cross multiply
    85,492.50x = 117,979.70 × 47,766.75
  4. Step 4: Simplify right side
    85,492.50x = 5,635,506,596.14
  5. Step 5: Solve for x
    x = 5,635,506,596.14/85,492.50
  6. Step 6: Final answer
    x = 65,918.14

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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.