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Finding the Fourth Proportional to 85,992.20, 118,662.45 and 47,748.14

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Solution

The fourth proportional to 85,992.20, 118,662.45 and 47,748.14 is: 65,888.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,992.20 : 118,662.45 = 47,748.14 : x
  2. Step 2: Convert to fraction form
    85,992.20/118,662.45 = 47,748.14/x
  3. Step 3: Cross multiply
    85,992.20x = 118,662.45 × 47,748.14
  4. Step 4: Simplify right side
    85,992.20x = 5,665,911,275.34
  5. Step 5: Solve for x
    x = 5,665,911,275.34/85,992.20
  6. Step 6: Final answer
    x = 65,888.67

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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.