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Finding the Fourth Proportional to 66,430.53, 99,645.53 and 16,509.69

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Solution

The fourth proportional to 66,430.53, 99,645.53 and 16,509.69 is: 24,764.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,430.53 : 99,645.53 = 16,509.69 : x
  2. Step 2: Convert to fraction form
    66,430.53/99,645.53 = 16,509.69/x
  3. Step 3: Cross multiply
    66,430.53x = 99,645.53 × 16,509.69
  4. Step 4: Simplify right side
    66,430.53x = 1,645,116,727.64
  5. Step 5: Solve for x
    x = 1,645,116,727.64/66,430.53
  6. Step 6: Final answer
    x = 24,764.47

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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.