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Finding the Fourth Proportional to 55,239.60, 82,859.40 and 18,303.60

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Solution

The fourth proportional to 55,239.60, 82,859.40 and 18,303.60 is: 27,455.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,239.60 : 82,859.40 = 18,303.60 : x
  2. Step 2: Convert to fraction form
    55,239.60/82,859.40 = 18,303.60/x
  3. Step 3: Cross multiply
    55,239.60x = 82,859.40 × 18,303.60
  4. Step 4: Simplify right side
    55,239.60x = 1,516,625,313.84
  5. Step 5: Solve for x
    x = 1,516,625,313.84/55,239.60
  6. Step 6: Final answer
    x = 27,455.40

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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.