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Finding the Fourth Proportional to 90,243.63, 135,395.01 and 36,980.46

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Solution

The fourth proportional to 90,243.63, 135,395.01 and 36,980.46 is: 55,482.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,243.63 : 135,395.01 = 36,980.46 : x
  2. Step 2: Convert to fraction form
    90,243.63/135,395.01 = 36,980.46/x
  3. Step 3: Cross multiply
    90,243.63x = 135,395.01 × 36,980.46
  4. Step 4: Simplify right side
    90,243.63x = 5,006,969,751.50
  5. Step 5: Solve for x
    x = 5,006,969,751.50/90,243.63
  6. Step 6: Final answer
    x = 55,482.81

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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.