Home / 85,088.04-127,642.30-28,163.88

Finding the Fourth Proportional to 85,088.04, 127,642.30 and 28,163.88

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Solution

The fourth proportional to 85,088.04, 127,642.30 and 28,163.88 is: 42,249.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,088.04 : 127,642.30 = 28,163.88 : x
  2. Step 2: Convert to fraction form
    85,088.04/127,642.30 = 28,163.88/x
  3. Step 3: Cross multiply
    85,088.04x = 127,642.30 × 28,163.88
  4. Step 4: Simplify right side
    85,088.04x = 3,594,902,420.12
  5. Step 5: Solve for x
    x = 3,594,902,420.12/85,088.04
  6. Step 6: Final answer
    x = 42,249.21

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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.