Home / 90,240.04-135,270.82-42,771.80

Finding the Fourth Proportional to 90,240.04, 135,270.82 and 42,771.80

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Solution

The fourth proportional to 90,240.04, 135,270.82 and 42,771.80 is: 64,115.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,240.04 : 135,270.82 = 42,771.80 : x
  2. Step 2: Convert to fraction form
    90,240.04/135,270.82 = 42,771.80/x
  3. Step 3: Cross multiply
    90,240.04x = 135,270.82 × 42,771.80
  4. Step 4: Simplify right side
    90,240.04x = 5,785,776,458.88
  5. Step 5: Solve for x
    x = 5,785,776,458.88/90,240.04
  6. Step 6: Final answer
    x = 64,115.40

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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.