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Finding the Fourth Proportional to 85,477.32, 117,948.53 and 47,234.55

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Solution

The fourth proportional to 85,477.32, 117,948.53 and 47,234.55 is: 65,178.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,477.32 : 117,948.53 = 47,234.55 : x
  2. Step 2: Convert to fraction form
    85,477.32/117,948.53 = 47,234.55/x
  3. Step 3: Cross multiply
    85,477.32x = 117,948.53 × 47,234.55
  4. Step 4: Simplify right side
    85,477.32x = 5,571,245,501.54
  5. Step 5: Solve for x
    x = 5,571,245,501.54/85,477.32
  6. Step 6: Final answer
    x = 65,178.06

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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.