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Finding the Fourth Proportional to 55,312.37, 82,968.39 and 13,759.37

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Solution

The fourth proportional to 55,312.37, 82,968.39 and 13,759.37 is: 20,639.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,312.37 : 82,968.39 = 13,759.37 : x
  2. Step 2: Convert to fraction form
    55,312.37/82,968.39 = 13,759.37/x
  3. Step 3: Cross multiply
    55,312.37x = 82,968.39 × 13,759.37
  4. Step 4: Simplify right side
    55,312.37x = 1,141,592,361.47
  5. Step 5: Solve for x
    x = 1,141,592,361.47/55,312.37
  6. Step 6: Final answer
    x = 20,639.01

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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.