Home / 90,444.36-135,621-53,013.36

Finding the Fourth Proportional to 90,444.36, 135,621 and 53,013.36

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Solution

The fourth proportional to 90,444.36, 135,621 and 53,013.36 is: 79,493.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,444.36 : 135,621 = 53,013.36 : x
  2. Step 2: Convert to fraction form
    90,444.36/135,621 = 53,013.36/x
  3. Step 3: Cross multiply
    90,444.36x = 135,621 × 53,013.36
  4. Step 4: Simplify right side
    90,444.36x = 7,189,724,896.56
  5. Step 5: Solve for x
    x = 7,189,724,896.56/90,444.36
  6. Step 6: Final answer
    x = 79,493.35

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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.