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Finding the Fourth Proportional to 55,991.20, 83,889.60 and 36,259.60

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Solution

The fourth proportional to 55,991.20, 83,889.60 and 36,259.60 is: 54,326.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,991.20 : 83,889.60 = 36,259.60 : x
  2. Step 2: Convert to fraction form
    55,991.20/83,889.60 = 36,259.60/x
  3. Step 3: Cross multiply
    55,991.20x = 83,889.60 × 36,259.60
  4. Step 4: Simplify right side
    55,991.20x = 3,041,803,340.16
  5. Step 5: Solve for x
    x = 3,041,803,340.16/55,991.20
  6. Step 6: Final answer
    x = 54,326.45

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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.