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Finding the Fourth Proportional to 90,366.93, 135,587.56 and 39,739.90

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Solution

The fourth proportional to 90,366.93, 135,587.56 and 39,739.90 is: 59,626.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,366.93 : 135,587.56 = 39,739.90 : x
  2. Step 2: Convert to fraction form
    90,366.93/135,587.56 = 39,739.90/x
  3. Step 3: Cross multiply
    90,366.93x = 135,587.56 × 39,739.90
  4. Step 4: Simplify right side
    90,366.93x = 5,388,236,075.64
  5. Step 5: Solve for x
    x = 5,388,236,075.64/90,366.93
  6. Step 6: Final answer
    x = 59,626.19

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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.