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Finding the Fourth Proportional to 85,173.32, 117,541.53 and 47,447.57

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Solution

The fourth proportional to 85,173.32, 117,541.53 and 47,447.57 is: 65,478.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,173.32 : 117,541.53 = 47,447.57 : x
  2. Step 2: Convert to fraction form
    85,173.32/117,541.53 = 47,447.57/x
  3. Step 3: Cross multiply
    85,173.32x = 117,541.53 × 47,447.57
  4. Step 4: Simplify right side
    85,173.32x = 5,577,060,266.44
  5. Step 5: Solve for x
    x = 5,577,060,266.44/85,173.32
  6. Step 6: Final answer
    x = 65,478.96

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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.