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Finding the Fourth Proportional to 89,804.59, 134,727.99 and 30,640.47

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Solution

The fourth proportional to 89,804.59, 134,727.99 and 30,640.47 is: 45,967.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,804.59 : 134,727.99 = 30,640.47 : x
  2. Step 2: Convert to fraction form
    89,804.59/134,727.99 = 30,640.47/x
  3. Step 3: Cross multiply
    89,804.59x = 134,727.99 × 30,640.47
  4. Step 4: Simplify right side
    89,804.59x = 4,128,128,935.76
  5. Step 5: Solve for x
    x = 4,128,128,935.76/89,804.59
  6. Step 6: Final answer
    x = 45,967.91

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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.