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Finding the Fourth Proportional to 85,354.56, 117,789.30 and 47,114.12

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Solution

The fourth proportional to 85,354.56, 117,789.30 and 47,114.12 is: 65,017.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,354.56 : 117,789.30 = 47,114.12 : x
  2. Step 2: Convert to fraction form
    85,354.56/117,789.30 = 47,114.12/x
  3. Step 3: Cross multiply
    85,354.56x = 117,789.30 × 47,114.12
  4. Step 4: Simplify right side
    85,354.56x = 5,549,539,214.92
  5. Step 5: Solve for x
    x = 5,549,539,214.92/85,354.56
  6. Step 6: Final answer
    x = 65,017.49

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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.