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Finding the Fourth Proportional to 90,030.64, 135,024.96 and 26,844.96

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Solution

The fourth proportional to 90,030.64, 135,024.96 and 26,844.96 is: 40,261.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,030.64 : 135,024.96 = 26,844.96 : x
  2. Step 2: Convert to fraction form
    90,030.64/135,024.96 = 26,844.96/x
  3. Step 3: Cross multiply
    90,030.64x = 135,024.96 × 26,844.96
  4. Step 4: Simplify right side
    90,030.64x = 3,624,739,650.20
  5. Step 5: Solve for x
    x = 3,624,739,650.20/90,030.64
  6. Step 6: Final answer
    x = 40,261.18

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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.