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Finding the Fourth Proportional to 90,871.54, 136,326.92 and 27,690.02

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Solution

The fourth proportional to 90,871.54, 136,326.92 and 27,690.02 is: 41,541.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,871.54 : 136,326.92 = 27,690.02 : x
  2. Step 2: Convert to fraction form
    90,871.54/136,326.92 = 27,690.02/x
  3. Step 3: Cross multiply
    90,871.54x = 136,326.92 × 27,690.02
  4. Step 4: Simplify right side
    90,871.54x = 3,774,894,832.48
  5. Step 5: Solve for x
    x = 3,774,894,832.48/90,871.54
  6. Step 6: Final answer
    x = 41,541.00

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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.