Home / 90,623.80-135,984.30-38,038.60

Finding the Fourth Proportional to 90,623.80, 135,984.30 and 38,038.60

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Solution

The fourth proportional to 90,623.80, 135,984.30 and 38,038.60 is: 57,078.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,623.80 : 135,984.30 = 38,038.60 : x
  2. Step 2: Convert to fraction form
    90,623.80/135,984.30 = 38,038.60/x
  3. Step 3: Cross multiply
    90,623.80x = 135,984.30 × 38,038.60
  4. Step 4: Simplify right side
    90,623.80x = 5,172,652,393.98
  5. Step 5: Solve for x
    x = 5,172,652,393.98/90,623.80
  6. Step 6: Final answer
    x = 57,078.30

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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.