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Finding the Fourth Proportional to 100,640.80, 151,047.60 and 44,567.20

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Solution

The fourth proportional to 100,640.80, 151,047.60 and 44,567.20 is: 66,889.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,640.80 : 151,047.60 = 44,567.20 : x
  2. Step 2: Convert to fraction form
    100,640.80/151,047.60 = 44,567.20/x
  3. Step 3: Cross multiply
    100,640.80x = 151,047.60 × 44,567.20
  4. Step 4: Simplify right side
    100,640.80x = 6,731,768,598.72
  5. Step 5: Solve for x
    x = 6,731,768,598.72/100,640.80
  6. Step 6: Final answer
    x = 66,889.06

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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.