Home / 66,654.99-91,985.01-39,799.86

Finding the Fourth Proportional to 66,654.99, 91,985.01 and 39,799.86

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Solution

The fourth proportional to 66,654.99, 91,985.01 and 39,799.86 is: 54,924.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,654.99 : 91,985.01 = 39,799.86 : x
  2. Step 2: Convert to fraction form
    66,654.99/91,985.01 = 39,799.86/x
  3. Step 3: Cross multiply
    66,654.99x = 91,985.01 × 39,799.86
  4. Step 4: Simplify right side
    66,654.99x = 3,660,990,520.10
  5. Step 5: Solve for x
    x = 3,660,990,520.10/66,654.99
  6. Step 6: Final answer
    x = 54,924.48

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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.