Home / 66,411.20-99,681.60-33,168.80

Finding the Fourth Proportional to 66,411.20, 99,681.60 and 33,168.80

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Solution

The fourth proportional to 66,411.20, 99,681.60 and 33,168.80 is: 49,785.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,411.20 : 99,681.60 = 33,168.80 : x
  2. Step 2: Convert to fraction form
    66,411.20/99,681.60 = 33,168.80/x
  3. Step 3: Cross multiply
    66,411.20x = 99,681.60 × 33,168.80
  4. Step 4: Simplify right side
    66,411.20x = 3,306,319,054.08
  5. Step 5: Solve for x
    x = 3,306,319,054.08/66,411.20
  6. Step 6: Final answer
    x = 49,785.56

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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.