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Finding the Fourth Proportional to 64,655.82, 89,204.29 and 39,154.05

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Solution

The fourth proportional to 64,655.82, 89,204.29 and 39,154.05 is: 54,020.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,655.82 : 89,204.29 = 39,154.05 : x
  2. Step 2: Convert to fraction form
    64,655.82/89,204.29 = 39,154.05/x
  3. Step 3: Cross multiply
    64,655.82x = 89,204.29 × 39,154.05
  4. Step 4: Simplify right side
    64,655.82x = 3,492,709,132.99
  5. Step 5: Solve for x
    x = 3,492,709,132.99/64,655.82
  6. Step 6: Final answer
    x = 54,020.03

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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.