Home / 90,672.40-125,108.58-54,855.28

Finding the Fourth Proportional to 90,672.40, 125,108.58 and 54,855.28

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Solution

The fourth proportional to 90,672.40, 125,108.58 and 54,855.28 is: 75,688.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,672.40 : 125,108.58 = 54,855.28 : x
  2. Step 2: Convert to fraction form
    90,672.40/125,108.58 = 54,855.28/x
  3. Step 3: Cross multiply
    90,672.40x = 125,108.58 × 54,855.28
  4. Step 4: Simplify right side
    90,672.40x = 6,862,866,186.30
  5. Step 5: Solve for x
    x = 6,862,866,186.30/90,672.40
  6. Step 6: Final answer
    x = 75,688.59

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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.