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Finding the Fourth Proportional to 55,415.40, 83,133.90 and 22,129.80

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Solution

The fourth proportional to 55,415.40, 83,133.90 and 22,129.80 is: 33,199.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,415.40 : 83,133.90 = 22,129.80 : x
  2. Step 2: Convert to fraction form
    55,415.40/83,133.90 = 22,129.80/x
  3. Step 3: Cross multiply
    55,415.40x = 83,133.90 × 22,129.80
  4. Step 4: Simplify right side
    55,415.40x = 1,839,736,580.22
  5. Step 5: Solve for x
    x = 1,839,736,580.22/55,415.40
  6. Step 6: Final answer
    x = 33,199.01

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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.