Home / 66,966.40-100,313.28-53,747.20

Finding the Fourth Proportional to 66,966.40, 100,313.28 and 53,747.20

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Solution

The fourth proportional to 66,966.40, 100,313.28 and 53,747.20 is: 80,511.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,966.40 : 100,313.28 = 53,747.20 : x
  2. Step 2: Convert to fraction form
    66,966.40/100,313.28 = 53,747.20/x
  3. Step 3: Cross multiply
    66,966.40x = 100,313.28 × 53,747.20
  4. Step 4: Simplify right side
    66,966.40x = 5,391,557,922.82
  5. Step 5: Solve for x
    x = 5,391,557,922.82/66,966.40
  6. Step 6: Final answer
    x = 80,511.39

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1.5x scale

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.