Home / 90,640.58-136,006.94-40,710.50

Finding the Fourth Proportional to 90,640.58, 136,006.94 and 40,710.50

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Solution

The fourth proportional to 90,640.58, 136,006.94 and 40,710.50 is: 61,086.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,640.58 : 136,006.94 = 40,710.50 : x
  2. Step 2: Convert to fraction form
    90,640.58/136,006.94 = 40,710.50/x
  3. Step 3: Cross multiply
    90,640.58x = 136,006.94 × 40,710.50
  4. Step 4: Simplify right side
    90,640.58x = 5,536,909,952.61
  5. Step 5: Solve for x
    x = 5,536,909,952.61/90,640.58
  6. Step 6: Final answer
    x = 61,086.43

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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.