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Finding the Fourth Proportional to 90,484.31, 135,726.46 and 49,012.31

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Solution

The fourth proportional to 90,484.31, 135,726.46 and 49,012.31 is: 73,518.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,484.31 : 135,726.46 = 49,012.31 : x
  2. Step 2: Convert to fraction form
    90,484.31/135,726.46 = 49,012.31/x
  3. Step 3: Cross multiply
    90,484.31x = 135,726.46 × 49,012.31
  4. Step 4: Simplify right side
    90,484.31x = 6,652,266,654.09
  5. Step 5: Solve for x
    x = 6,652,266,654.09/90,484.31
  6. Step 6: Final answer
    x = 73,518.46

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1.5x scale

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.