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Finding the Fourth Proportional to 66,811.70, 100,217.55 and 62,405.30

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Solution

The fourth proportional to 66,811.70, 100,217.55 and 62,405.30 is: 93,607.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,811.70 : 100,217.55 = 62,405.30 : x
  2. Step 2: Convert to fraction form
    66,811.70/100,217.55 = 62,405.30/x
  3. Step 3: Cross multiply
    66,811.70x = 100,217.55 × 62,405.30
  4. Step 4: Simplify right side
    66,811.70x = 6,254,106,273.02
  5. Step 5: Solve for x
    x = 6,254,106,273.02/66,811.70
  6. Step 6: Final answer
    x = 93,607.95

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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.