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Finding the Fourth Proportional to 85,473.60, 128,234.10 and 35,577.20

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Solution

The fourth proportional to 85,473.60, 128,234.10 and 35,577.20 is: 53,375.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,473.60 : 128,234.10 = 35,577.20 : x
  2. Step 2: Convert to fraction form
    85,473.60/128,234.10 = 35,577.20/x
  3. Step 3: Cross multiply
    85,473.60x = 128,234.10 × 35,577.20
  4. Step 4: Simplify right side
    85,473.60x = 4,562,210,222.52
  5. Step 5: Solve for x
    x = 4,562,210,222.52/85,473.60
  6. Step 6: Final answer
    x = 53,375.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.