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Finding the Fourth Proportional to 89,652.80, 134,430.60 and 30,464.48

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Solution

The fourth proportional to 89,652.80, 134,430.60 and 30,464.48 is: 45,680.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,652.80 : 134,430.60 = 30,464.48 : x
  2. Step 2: Convert to fraction form
    89,652.80/134,430.60 = 30,464.48/x
  3. Step 3: Cross multiply
    89,652.80x = 134,430.60 × 30,464.48
  4. Step 4: Simplify right side
    89,652.80x = 4,095,358,325.09
  5. Step 5: Solve for x
    x = 4,095,358,325.09/89,652.80
  6. Step 6: Final answer
    x = 45,680.21

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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.