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Finding the Fourth Proportional to 64,625.76, 89,199.36 and 39,496.32

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Solution

The fourth proportional to 64,625.76, 89,199.36 and 39,496.32 is: 54,514.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,625.76 : 89,199.36 = 39,496.32 : x
  2. Step 2: Convert to fraction form
    64,625.76/89,199.36 = 39,496.32/x
  3. Step 3: Cross multiply
    64,625.76x = 89,199.36 × 39,496.32
  4. Step 4: Simplify right side
    64,625.76x = 3,523,046,466.36
  5. Step 5: Solve for x
    x = 3,523,046,466.36/64,625.76
  6. Step 6: Final answer
    x = 54,514.58

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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.