Home / 85,153.04-127,745.05-28,990.27

Finding the Fourth Proportional to 85,153.04, 127,745.05 and 28,990.27

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Solution

The fourth proportional to 85,153.04, 127,745.05 and 28,990.27 is: 43,490.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,153.04 : 127,745.05 = 28,990.27 : x
  2. Step 2: Convert to fraction form
    85,153.04/127,745.05 = 28,990.27/x
  3. Step 3: Cross multiply
    85,153.04x = 127,745.05 × 28,990.27
  4. Step 4: Simplify right side
    85,153.04x = 3,703,363,490.66
  5. Step 5: Solve for x
    x = 3,703,363,490.66/85,153.04
  6. Step 6: Final answer
    x = 43,490.68

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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.