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Finding the Fourth Proportional to 66,713.40, 100,223.70 and 64,102.20

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Solution

The fourth proportional to 66,713.40, 100,223.70 and 64,102.20 is: 96,300.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,713.40 : 100,223.70 = 64,102.20 : x
  2. Step 2: Convert to fraction form
    66,713.40/100,223.70 = 64,102.20/x
  3. Step 3: Cross multiply
    66,713.40x = 100,223.70 × 64,102.20
  4. Step 4: Simplify right side
    66,713.40x = 6,424,559,662.14
  5. Step 5: Solve for x
    x = 6,424,559,662.14/66,713.40
  6. Step 6: Final answer
    x = 96,300.89

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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.