Home / 85,535.24-128,310.03-31,514.63

Finding the Fourth Proportional to 85,535.24, 128,310.03 and 31,514.63

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Solution

The fourth proportional to 85,535.24, 128,310.03 and 31,514.63 is: 47,274.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,535.24 : 128,310.03 = 31,514.63 : x
  2. Step 2: Convert to fraction form
    85,535.24/128,310.03 = 31,514.63/x
  3. Step 3: Cross multiply
    85,535.24x = 128,310.03 × 31,514.63
  4. Step 4: Simplify right side
    85,535.24x = 4,043,642,479.19
  5. Step 5: Solve for x
    x = 4,043,642,479.19/85,535.24
  6. Step 6: Final answer
    x = 47,274.58

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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.