Home / 90,570.47-135,910.98-57,244.64

Finding the Fourth Proportional to 90,570.47, 135,910.98 and 57,244.64

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Solution

The fourth proportional to 90,570.47, 135,910.98 and 57,244.64 is: 85,901.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,570.47 : 135,910.98 = 57,244.64 : x
  2. Step 2: Convert to fraction form
    90,570.47/135,910.98 = 57,244.64/x
  3. Step 3: Cross multiply
    90,570.47x = 135,910.98 × 57,244.64
  4. Step 4: Simplify right side
    90,570.47x = 7,780,174,442.59
  5. Step 5: Solve for x
    x = 7,780,174,442.59/90,570.47
  6. Step 6: Final answer
    x = 85,901.89

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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.