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Finding the Fourth Proportional to 85,556.80, 128,265.90 and 35,674.30

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Solution

The fourth proportional to 85,556.80, 128,265.90 and 35,674.30 is: 53,482.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,556.80 : 128,265.90 = 35,674.30 : x
  2. Step 2: Convert to fraction form
    85,556.80/128,265.90 = 35,674.30/x
  3. Step 3: Cross multiply
    85,556.80x = 128,265.90 × 35,674.30
  4. Step 4: Simplify right side
    85,556.80x = 4,575,796,196.37
  5. Step 5: Solve for x
    x = 4,575,796,196.37/85,556.80
  6. Step 6: Final answer
    x = 53,482.55

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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.