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Finding the Fourth Proportional to 90,351.60, 135,527.40 and 58,858.80

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Solution

The fourth proportional to 90,351.60, 135,527.40 and 58,858.80 is: 88,288.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,351.60 : 135,527.40 = 58,858.80 : x
  2. Step 2: Convert to fraction form
    90,351.60/135,527.40 = 58,858.80/x
  3. Step 3: Cross multiply
    90,351.60x = 135,527.40 × 58,858.80
  4. Step 4: Simplify right side
    90,351.60x = 7,976,980,131.12
  5. Step 5: Solve for x
    x = 7,976,980,131.12/90,351.60
  6. Step 6: Final answer
    x = 88,288.20

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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.