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Finding the Fourth Proportional to 64,685.84, 97,028.78 and 17,938.72

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Solution

The fourth proportional to 64,685.84, 97,028.78 and 17,938.72 is: 26,908.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,685.84 : 97,028.78 = 17,938.72 : x
  2. Step 2: Convert to fraction form
    64,685.84/97,028.78 = 17,938.72/x
  3. Step 3: Cross multiply
    64,685.84x = 97,028.78 × 17,938.72
  4. Step 4: Simplify right side
    64,685.84x = 1,740,572,116.36
  5. Step 5: Solve for x
    x = 1,740,572,116.36/64,685.84
  6. Step 6: Final answer
    x = 26,908.09

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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.