Home / 98,440.28-135,800.31-64,433.78

Finding the Fourth Proportional to 98,440.28, 135,800.31 and 64,433.78

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Solution

The fourth proportional to 98,440.28, 135,800.31 and 64,433.78 is: 88,887.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,440.28 : 135,800.31 = 64,433.78 : x
  2. Step 2: Convert to fraction form
    98,440.28/135,800.31 = 64,433.78/x
  3. Step 3: Cross multiply
    98,440.28x = 135,800.31 × 64,433.78
  4. Step 4: Simplify right side
    98,440.28x = 8,750,127,298.47
  5. Step 5: Solve for x
    x = 8,750,127,298.47/98,440.28
  6. Step 6: Final answer
    x = 88,887.67

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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.