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Finding the Fourth Proportional to 90,857.60, 136,232.40 and 55,822.40

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Solution

The fourth proportional to 90,857.60, 136,232.40 and 55,822.40 is: 83,700.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,857.60 : 136,232.40 = 55,822.40 : x
  2. Step 2: Convert to fraction form
    90,857.60/136,232.40 = 55,822.40/x
  3. Step 3: Cross multiply
    90,857.60x = 136,232.40 × 55,822.40
  4. Step 4: Simplify right side
    90,857.60x = 7,604,819,525.76
  5. Step 5: Solve for x
    x = 7,604,819,525.76/90,857.60
  6. Step 6: Final answer
    x = 83,700.42

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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.