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Finding the Fourth Proportional to 90,013.60, 135,008.56 and 23,458.56

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Solution

The fourth proportional to 90,013.60, 135,008.56 and 23,458.56 is: 35,184.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,013.60 : 135,008.56 = 23,458.56 : x
  2. Step 2: Convert to fraction form
    90,013.60/135,008.56 = 23,458.56/x
  3. Step 3: Cross multiply
    90,013.60x = 135,008.56 × 23,458.56
  4. Step 4: Simplify right side
    90,013.60x = 3,167,106,405.27
  5. Step 5: Solve for x
    x = 3,167,106,405.27/90,013.60
  6. Step 6: Final answer
    x = 35,184.75

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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.