Home / 81,619.05-122,701.95-70,793.40

Finding the Fourth Proportional to 81,619.05, 122,701.95 and 70,793.40

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Solution

The fourth proportional to 81,619.05, 122,701.95 and 70,793.40 is: 106,427.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,619.05 : 122,701.95 = 70,793.40 : x
  2. Step 2: Convert to fraction form
    81,619.05/122,701.95 = 70,793.40/x
  3. Step 3: Cross multiply
    81,619.05x = 122,701.95 × 70,793.40
  4. Step 4: Simplify right side
    81,619.05x = 8,686,488,227.13
  5. Step 5: Solve for x
    x = 8,686,488,227.13/81,619.05
  6. Step 6: Final answer
    x = 106,427.22

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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.