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Finding the Fourth Proportional to 55,405.70, 83,108.55 and 25,881.20

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Solution

The fourth proportional to 55,405.70, 83,108.55 and 25,881.20 is: 38,821.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,405.70 : 83,108.55 = 25,881.20 : x
  2. Step 2: Convert to fraction form
    55,405.70/83,108.55 = 25,881.20/x
  3. Step 3: Cross multiply
    55,405.70x = 83,108.55 × 25,881.20
  4. Step 4: Simplify right side
    55,405.70x = 2,150,949,004.26
  5. Step 5: Solve for x
    x = 2,150,949,004.26/55,405.70
  6. Step 6: Final answer
    x = 38,821.80

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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.