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Finding the Fourth Proportional to 85,074.80, 117,402.08 and 47,349.05

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Solution

The fourth proportional to 85,074.80, 117,402.08 and 47,349.05 is: 65,341.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,074.80 : 117,402.08 = 47,349.05 : x
  2. Step 2: Convert to fraction form
    85,074.80/117,402.08 = 47,349.05/x
  3. Step 3: Cross multiply
    85,074.80x = 117,402.08 × 47,349.05
  4. Step 4: Simplify right side
    85,074.80x = 5,558,876,132.27
  5. Step 5: Solve for x
    x = 5,558,876,132.27/85,074.80
  6. Step 6: Final answer
    x = 65,341.05

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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.