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Finding the Fourth Proportional to 64,120.60, 96,180.90 and 42,002.20

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Solution

The fourth proportional to 64,120.60, 96,180.90 and 42,002.20 is: 63,003.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,120.60 : 96,180.90 = 42,002.20 : x
  2. Step 2: Convert to fraction form
    64,120.60/96,180.90 = 42,002.20/x
  3. Step 3: Cross multiply
    64,120.60x = 96,180.90 × 42,002.20
  4. Step 4: Simplify right side
    64,120.60x = 4,039,809,397.98
  5. Step 5: Solve for x
    x = 4,039,809,397.98/64,120.60
  6. Step 6: Final answer
    x = 63,003.30

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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.