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Finding the Fourth Proportional to 90,359.80, 135,548.34 and 37,763.80

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Solution

The fourth proportional to 90,359.80, 135,548.34 and 37,763.80 is: 56,649.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,359.80 : 135,548.34 = 37,763.80 : x
  2. Step 2: Convert to fraction form
    90,359.80/135,548.34 = 37,763.80/x
  3. Step 3: Cross multiply
    90,359.80x = 135,548.34 × 37,763.80
  4. Step 4: Simplify right side
    90,359.80x = 5,118,820,402.09
  5. Step 5: Solve for x
    x = 5,118,820,402.09/90,359.80
  6. Step 6: Final answer
    x = 56,649.31

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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.