Home / 85,005.10-127,519.80-28,847.80

Finding the Fourth Proportional to 85,005.10, 127,519.80 and 28,847.80

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Solution

The fourth proportional to 85,005.10, 127,519.80 and 28,847.80 is: 43,275.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,005.10 : 127,519.80 = 28,847.80 : x
  2. Step 2: Convert to fraction form
    85,005.10/127,519.80 = 28,847.80/x
  3. Step 3: Cross multiply
    85,005.10x = 127,519.80 × 28,847.80
  4. Step 4: Simplify right side
    85,005.10x = 3,678,665,686.44
  5. Step 5: Solve for x
    x = 3,678,665,686.44/85,005.10
  6. Step 6: Final answer
    x = 43,275.82

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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.