Home / 98,441.28-135,801.69-64,434.78

Finding the Fourth Proportional to 98,441.28, 135,801.69 and 64,434.78

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Solution

The fourth proportional to 98,441.28, 135,801.69 and 64,434.78 is: 88,889.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,441.28 : 135,801.69 = 64,434.78 : x
  2. Step 2: Convert to fraction form
    98,441.28/135,801.69 = 64,434.78/x
  3. Step 3: Cross multiply
    98,441.28x = 135,801.69 × 64,434.78
  4. Step 4: Simplify right side
    98,441.28x = 8,750,352,018.78
  5. Step 5: Solve for x
    x = 8,750,352,018.78/98,441.28
  6. Step 6: Final answer
    x = 88,889.05

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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.