Home / 90,666.11-125,067.08-56,615.48

Finding the Fourth Proportional to 90,666.11, 125,067.08 and 56,615.48

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Solution

The fourth proportional to 90,666.11, 125,067.08 and 56,615.48 is: 78,096.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,666.11 : 125,067.08 = 56,615.48 : x
  2. Step 2: Convert to fraction form
    90,666.11/125,067.08 = 56,615.48/x
  3. Step 3: Cross multiply
    90,666.11x = 125,067.08 × 56,615.48
  4. Step 4: Simplify right side
    90,666.11x = 7,080,731,857.99
  5. Step 5: Solve for x
    x = 7,080,731,857.99/90,666.11
  6. Step 6: Final answer
    x = 78,096.79

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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.