Home / 89,620.40-134,364.64-30,440.16

Finding the Fourth Proportional to 89,620.40, 134,364.64 and 30,440.16

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Solution

The fourth proportional to 89,620.40, 134,364.64 and 30,440.16 is: 45,637.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,620.40 : 134,364.64 = 30,440.16 : x
  2. Step 2: Convert to fraction form
    89,620.40/134,364.64 = 30,440.16/x
  3. Step 3: Cross multiply
    89,620.40x = 134,364.64 × 30,440.16
  4. Step 4: Simplify right side
    89,620.40x = 4,090,081,139.94
  5. Step 5: Solve for x
    x = 4,090,081,139.94/89,620.40
  6. Step 6: Final answer
    x = 45,637.84

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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.