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Finding the Fourth Proportional to 66,466.70, 99,710 and 21,473.02

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Solution

The fourth proportional to 66,466.70, 99,710 and 21,473.02 is: 32,212.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,466.70 : 99,710 = 21,473.02 : x
  2. Step 2: Convert to fraction form
    66,466.70/99,710 = 21,473.02/x
  3. Step 3: Cross multiply
    66,466.70x = 99,710 × 21,473.02
  4. Step 4: Simplify right side
    66,466.70x = 2,141,074,824.20
  5. Step 5: Solve for x
    x = 2,141,074,824.20/66,466.70
  6. Step 6: Final answer
    x = 32,212.74

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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.