Home / 90,869.06-136,310.90-28,539.56

Finding the Fourth Proportional to 90,869.06, 136,310.90 and 28,539.56

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Solution

The fourth proportional to 90,869.06, 136,310.90 and 28,539.56 is: 42,811.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,869.06 : 136,310.90 = 28,539.56 : x
  2. Step 2: Convert to fraction form
    90,869.06/136,310.90 = 28,539.56/x
  3. Step 3: Cross multiply
    90,869.06x = 136,310.90 × 28,539.56
  4. Step 4: Simplify right side
    90,869.06x = 3,890,253,307.28
  5. Step 5: Solve for x
    x = 3,890,253,307.28/90,869.06
  6. Step 6: Final answer
    x = 42,811.64

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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.