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Finding the Fourth Proportional to 64,571.20, 89,109.12 and 36,275.20

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Solution

The fourth proportional to 64,571.20, 89,109.12 and 36,275.20 is: 50,060.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,571.20 : 89,109.12 = 36,275.20 : x
  2. Step 2: Convert to fraction form
    64,571.20/89,109.12 = 36,275.20/x
  3. Step 3: Cross multiply
    64,571.20x = 89,109.12 × 36,275.20
  4. Step 4: Simplify right side
    64,571.20x = 3,232,451,149.82
  5. Step 5: Solve for x
    x = 3,232,451,149.82/64,571.20
  6. Step 6: Final answer
    x = 50,060.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.