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Finding the Fourth Proportional to 64,620.48, 89,175.84 and 36,326.40

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Solution

The fourth proportional to 64,620.48, 89,175.84 and 36,326.40 is: 50,130.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,620.48 : 89,175.84 = 36,326.40 : x
  2. Step 2: Convert to fraction form
    64,620.48/89,175.84 = 36,326.40/x
  3. Step 3: Cross multiply
    64,620.48x = 89,175.84 × 36,326.40
  4. Step 4: Simplify right side
    64,620.48x = 3,239,437,234.18
  5. Step 5: Solve for x
    x = 3,239,437,234.18/64,620.48
  6. Step 6: Final answer
    x = 50,130.19

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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.