Home / 90,705.84-135,832.47-57,325.20

Finding the Fourth Proportional to 90,705.84, 135,832.47 and 57,325.20

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Solution

The fourth proportional to 90,705.84, 135,832.47 and 57,325.20 is: 85,844.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,705.84 : 135,832.47 = 57,325.20 : x
  2. Step 2: Convert to fraction form
    90,705.84/135,832.47 = 57,325.20/x
  3. Step 3: Cross multiply
    90,705.84x = 135,832.47 × 57,325.20
  4. Step 4: Simplify right side
    90,705.84x = 7,786,623,509.24
  5. Step 5: Solve for x
    x = 7,786,623,509.24/90,705.84
  6. Step 6: Final answer
    x = 85,844.79

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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.