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Finding the Fourth Proportional to 64,880.47, 97,315.84 and 18,136.99

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Solution

The fourth proportional to 64,880.47, 97,315.84 and 18,136.99 is: 27,204.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,880.47 : 97,315.84 = 18,136.99 : x
  2. Step 2: Convert to fraction form
    64,880.47/97,315.84 = 18,136.99/x
  3. Step 3: Cross multiply
    64,880.47x = 97,315.84 × 18,136.99
  4. Step 4: Simplify right side
    64,880.47x = 1,765,015,885.00
  5. Step 5: Solve for x
    x = 1,765,015,885.00/64,880.47
  6. Step 6: Final answer
    x = 27,204.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.