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Finding the Fourth Proportional to 66,479.68, 99,762.80 and 35,336.80

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Solution

The fourth proportional to 66,479.68, 99,762.80 and 35,336.80 is: 53,028.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,479.68 : 99,762.80 = 35,336.80 : x
  2. Step 2: Convert to fraction form
    66,479.68/99,762.80 = 35,336.80/x
  3. Step 3: Cross multiply
    66,479.68x = 99,762.80 × 35,336.80
  4. Step 4: Simplify right side
    66,479.68x = 3,525,298,111.04
  5. Step 5: Solve for x
    x = 3,525,298,111.04/66,479.68
  6. Step 6: Final answer
    x = 53,028.21

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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.