Home / 90,285.64-135,451.50-57,240.52

Finding the Fourth Proportional to 90,285.64, 135,451.50 and 57,240.52

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Solution

The fourth proportional to 90,285.64, 135,451.50 and 57,240.52 is: 85,875.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,285.64 : 135,451.50 = 57,240.52 : x
  2. Step 2: Convert to fraction form
    90,285.64/135,451.50 = 57,240.52/x
  3. Step 3: Cross multiply
    90,285.64x = 135,451.50 × 57,240.52
  4. Step 4: Simplify right side
    90,285.64x = 7,753,314,294.78
  5. Step 5: Solve for x
    x = 7,753,314,294.78/90,285.64
  6. Step 6: Final answer
    x = 85,875.39

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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.