Home / 90,451.20-135,638.40-43,718.40

Finding the Fourth Proportional to 90,451.20, 135,638.40 and 43,718.40

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Solution

The fourth proportional to 90,451.20, 135,638.40 and 43,718.40 is: 65,559.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,451.20 : 135,638.40 = 43,718.40 : x
  2. Step 2: Convert to fraction form
    90,451.20/135,638.40 = 43,718.40/x
  3. Step 3: Cross multiply
    90,451.20x = 135,638.40 × 43,718.40
  4. Step 4: Simplify right side
    90,451.20x = 5,929,893,826.56
  5. Step 5: Solve for x
    x = 5,929,893,826.56/90,451.20
  6. Step 6: Final answer
    x = 65,559.04

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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.