Home / 284,821.50-427,130.10-85,104.66

Finding the Fourth Proportional to 284,821.50, 427,130.10 and 85,104.66

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Solution

The fourth proportional to 284,821.50, 427,130.10 and 85,104.66 is: 127,626.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,821.50 : 427,130.10 = 85,104.66 : x
  2. Step 2: Convert to fraction form
    284,821.50/427,130.10 = 85,104.66/x
  3. Step 3: Cross multiply
    284,821.50x = 427,130.10 × 85,104.66
  4. Step 4: Simplify right side
    284,821.50x = 36,350,761,936.27
  5. Step 5: Solve for x
    x = 36,350,761,936.27/284,821.50
  6. Step 6: Final answer
    x = 127,626.47

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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.