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Finding the Fourth Proportional to 66,812.70, 100,219.05 and 62,406.30

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Solution

The fourth proportional to 66,812.70, 100,219.05 and 62,406.30 is: 93,609.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,812.70 : 100,219.05 = 62,406.30 : x
  2. Step 2: Convert to fraction form
    66,812.70/100,219.05 = 62,406.30/x
  3. Step 3: Cross multiply
    66,812.70x = 100,219.05 × 62,406.30
  4. Step 4: Simplify right side
    66,812.70x = 6,254,300,100.02
  5. Step 5: Solve for x
    x = 6,254,300,100.02/66,812.70
  6. Step 6: Final answer
    x = 93,609.45

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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.