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Finding the Fourth Proportional to 90,858.60, 136,233.90 and 55,823.40

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Solution

The fourth proportional to 90,858.60, 136,233.90 and 55,823.40 is: 83,701.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,858.60 : 136,233.90 = 55,823.40 : x
  2. Step 2: Convert to fraction form
    90,858.60/136,233.90 = 55,823.40/x
  3. Step 3: Cross multiply
    90,858.60x = 136,233.90 × 55,823.40
  4. Step 4: Simplify right side
    90,858.60x = 7,605,039,493.26
  5. Step 5: Solve for x
    x = 7,605,039,493.26/90,858.60
  6. Step 6: Final answer
    x = 83,701.92

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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.