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Finding the Fourth Proportional to 64,375.20, 96,559.20 and 20,001.60

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Solution

The fourth proportional to 64,375.20, 96,559.20 and 20,001.60 is: 30,001.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,375.20 : 96,559.20 = 20,001.60 : x
  2. Step 2: Convert to fraction form
    64,375.20/96,559.20 = 20,001.60/x
  3. Step 3: Cross multiply
    64,375.20x = 96,559.20 × 20,001.60
  4. Step 4: Simplify right side
    64,375.20x = 1,931,338,494.72
  5. Step 5: Solve for x
    x = 1,931,338,494.72/64,375.20
  6. Step 6: Final answer
    x = 30,001.28

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1.5x scale

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.