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Finding the Fourth Proportional to 64,859.46, 89,492.43 and 39,379.22

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Solution

The fourth proportional to 64,859.46, 89,492.43 and 39,379.22 is: 54,335.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,859.46 : 89,492.43 = 39,379.22 : x
  2. Step 2: Convert to fraction form
    64,859.46/89,492.43 = 39,379.22/x
  3. Step 3: Cross multiply
    64,859.46x = 89,492.43 × 39,379.22
  4. Step 4: Simplify right side
    64,859.46x = 3,524,142,089.30
  5. Step 5: Solve for x
    x = 3,524,142,089.30/64,859.46
  6. Step 6: Final answer
    x = 54,335.05

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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.