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Finding the Fourth Proportional to 55,477.72, 83,175 and 18,015.40

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Solution

The fourth proportional to 55,477.72, 83,175 and 18,015.40 is: 27,009.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,477.72 : 83,175 = 18,015.40 : x
  2. Step 2: Convert to fraction form
    55,477.72/83,175 = 18,015.40/x
  3. Step 3: Cross multiply
    55,477.72x = 83,175 × 18,015.40
  4. Step 4: Simplify right side
    55,477.72x = 1,498,430,895.00
  5. Step 5: Solve for x
    x = 1,498,430,895.00/55,477.72
  6. Step 6: Final answer
    x = 27,009.60

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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.