Home / 90,417.43-135,626.14-30,440.89

Finding the Fourth Proportional to 90,417.43, 135,626.14 and 30,440.89

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Solution

The fourth proportional to 90,417.43, 135,626.14 and 30,440.89 is: 45,661.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,417.43 : 135,626.14 = 30,440.89 : x
  2. Step 2: Convert to fraction form
    90,417.43/135,626.14 = 30,440.89/x
  3. Step 3: Cross multiply
    90,417.43x = 135,626.14 × 30,440.89
  4. Step 4: Simplify right side
    90,417.43x = 4,128,579,993.70
  5. Step 5: Solve for x
    x = 4,128,579,993.70/90,417.43
  6. Step 6: Final answer
    x = 45,661.33

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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.