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Finding the Fourth Proportional to 98,440.41, 135,800.48 and 64,433.91

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Solution

The fourth proportional to 98,440.41, 135,800.48 and 64,433.91 is: 88,887.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,440.41 : 135,800.48 = 64,433.91 : x
  2. Step 2: Convert to fraction form
    98,440.41/135,800.48 = 64,433.91/x
  3. Step 3: Cross multiply
    98,440.41x = 135,800.48 × 64,433.91
  4. Step 4: Simplify right side
    98,440.41x = 8,750,155,584.11
  5. Step 5: Solve for x
    x = 8,750,155,584.11/98,440.41
  6. Step 6: Final answer
    x = 88,887.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.