Home / 90,663.40-135,930.30-40,702.60

Finding the Fourth Proportional to 90,663.40, 135,930.30 and 40,702.60

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Solution

The fourth proportional to 90,663.40, 135,930.30 and 40,702.60 is: 61,024.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,663.40 : 135,930.30 = 40,702.60 : x
  2. Step 2: Convert to fraction form
    90,663.40/135,930.30 = 40,702.60/x
  3. Step 3: Cross multiply
    90,663.40x = 135,930.30 × 40,702.60
  4. Step 4: Simplify right side
    90,663.40x = 5,532,716,628.78
  5. Step 5: Solve for x
    x = 5,532,716,628.78/90,663.40
  6. Step 6: Final answer
    x = 61,024.81

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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.