Home / 90,905.05-136,347.13-34,743.90

Finding the Fourth Proportional to 90,905.05, 136,347.13 and 34,743.90

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Solution

The fourth proportional to 90,905.05, 136,347.13 and 34,743.90 is: 52,111.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,905.05 : 136,347.13 = 34,743.90 : x
  2. Step 2: Convert to fraction form
    90,905.05/136,347.13 = 34,743.90/x
  3. Step 3: Cross multiply
    90,905.05x = 136,347.13 × 34,743.90
  4. Step 4: Simplify right side
    90,905.05x = 4,737,231,050.01
  5. Step 5: Solve for x
    x = 4,737,231,050.01/90,905.05
  6. Step 6: Final answer
    x = 52,111.86

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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.