Home / 85,267.40-127,899.90-38,520.20

Finding the Fourth Proportional to 85,267.40, 127,899.90 and 38,520.20

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Solution

The fourth proportional to 85,267.40, 127,899.90 and 38,520.20 is: 57,779.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,267.40 : 127,899.90 = 38,520.20 : x
  2. Step 2: Convert to fraction form
    85,267.40/127,899.90 = 38,520.20/x
  3. Step 3: Cross multiply
    85,267.40x = 127,899.90 × 38,520.20
  4. Step 4: Simplify right side
    85,267.40x = 4,926,729,727.98
  5. Step 5: Solve for x
    x = 4,926,729,727.98/85,267.40
  6. Step 6: Final answer
    x = 57,779.76

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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.