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Finding the Fourth Proportional to 66,816.70, 100,080.67 and 62,890.90

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Solution

The fourth proportional to 66,816.70, 100,080.67 and 62,890.90 is: 94,200.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,816.70 : 100,080.67 = 62,890.90 : x
  2. Step 2: Convert to fraction form
    66,816.70/100,080.67 = 62,890.90/x
  3. Step 3: Cross multiply
    66,816.70x = 100,080.67 × 62,890.90
  4. Step 4: Simplify right side
    66,816.70x = 6,294,163,408.90
  5. Step 5: Solve for x
    x = 6,294,163,408.90/66,816.70
  6. Step 6: Final answer
    x = 94,200.45

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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.