Home / 85,499.20-128,248.80-41,103.10

Finding the Fourth Proportional to 85,499.20, 128,248.80 and 41,103.10

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Solution

The fourth proportional to 85,499.20, 128,248.80 and 41,103.10 is: 61,654.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,499.20 : 128,248.80 = 41,103.10 : x
  2. Step 2: Convert to fraction form
    85,499.20/128,248.80 = 41,103.10/x
  3. Step 3: Cross multiply
    85,499.20x = 128,248.80 × 41,103.10
  4. Step 4: Simplify right side
    85,499.20x = 5,271,423,251.28
  5. Step 5: Solve for x
    x = 5,271,423,251.28/85,499.20
  6. Step 6: Final answer
    x = 61,654.65

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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.