Home / 90,638.45-135,957.72-34,465.59

Finding the Fourth Proportional to 90,638.45, 135,957.72 and 34,465.59

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Solution

The fourth proportional to 90,638.45, 135,957.72 and 34,465.59 is: 51,698.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,638.45 : 135,957.72 = 34,465.59 : x
  2. Step 2: Convert to fraction form
    90,638.45/135,957.72 = 34,465.59/x
  3. Step 3: Cross multiply
    90,638.45x = 135,957.72 × 34,465.59
  4. Step 4: Simplify right side
    90,638.45x = 4,685,863,164.10
  5. Step 5: Solve for x
    x = 4,685,863,164.10/90,638.45
  6. Step 6: Final answer
    x = 51,698.40

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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.