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Finding the Fourth Proportional to 90,583, 135,889.86 and 28,241.08

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Solution

The fourth proportional to 90,583, 135,889.86 and 28,241.08 is: 42,366.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,583 : 135,889.86 = 28,241.08 : x
  2. Step 2: Convert to fraction form
    90,583/135,889.86 = 28,241.08/x
  3. Step 3: Cross multiply
    90,583x = 135,889.86 × 28,241.08
  4. Step 4: Simplify right side
    90,583x = 3,837,676,407.45
  5. Step 5: Solve for x
    x = 3,837,676,407.45/90,583
  6. Step 6: Final answer
    x = 42,366.41

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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.