Home / 90,013.72-135,024.20-30,855.28

Finding the Fourth Proportional to 90,013.72, 135,024.20 and 30,855.28

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Solution

The fourth proportional to 90,013.72, 135,024.20 and 30,855.28 is: 46,284.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,013.72 : 135,024.20 = 30,855.28 : x
  2. Step 2: Convert to fraction form
    90,013.72/135,024.20 = 30,855.28/x
  3. Step 3: Cross multiply
    90,013.72x = 135,024.20 × 30,855.28
  4. Step 4: Simplify right side
    90,013.72x = 4,166,209,497.78
  5. Step 5: Solve for x
    x = 4,166,209,497.78/90,013.72
  6. Step 6: Final answer
    x = 46,284.16

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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.