Home / 41,129.10-56,728.80-28,387.10

Finding the Fourth Proportional to 41,129.10, 56,728.80 and 28,387.10

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Solution

The fourth proportional to 41,129.10, 56,728.80 and 28,387.10 is: 39,153.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,129.10 : 56,728.80 = 28,387.10 : x
  2. Step 2: Convert to fraction form
    41,129.10/56,728.80 = 28,387.10/x
  3. Step 3: Cross multiply
    41,129.10x = 56,728.80 × 28,387.10
  4. Step 4: Simplify right side
    41,129.10x = 1,610,366,118.48
  5. Step 5: Solve for x
    x = 1,610,366,118.48/41,129.10
  6. Step 6: Final answer
    x = 39,153.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.