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Finding the Fourth Proportional to 85,218.03, 117,600.85 and 46,978.20

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Solution

The fourth proportional to 85,218.03, 117,600.85 and 46,978.20 is: 64,829.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,218.03 : 117,600.85 = 46,978.20 : x
  2. Step 2: Convert to fraction form
    85,218.03/117,600.85 = 46,978.20/x
  3. Step 3: Cross multiply
    85,218.03x = 117,600.85 × 46,978.20
  4. Step 4: Simplify right side
    85,218.03x = 5,524,676,251.47
  5. Step 5: Solve for x
    x = 5,524,676,251.47/85,218.03
  6. Step 6: Final answer
    x = 64,829.90

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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.