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Finding the Fourth Proportional to 64,903.62, 97,320.69 and 19,917.06

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Solution

The fourth proportional to 64,903.62, 97,320.69 and 19,917.06 is: 29,864.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,903.62 : 97,320.69 = 19,917.06 : x
  2. Step 2: Convert to fraction form
    64,903.62/97,320.69 = 19,917.06/x
  3. Step 3: Cross multiply
    64,903.62x = 97,320.69 × 19,917.06
  4. Step 4: Simplify right side
    64,903.62x = 1,938,342,021.97
  5. Step 5: Solve for x
    x = 1,938,342,021.97/64,903.62
  6. Step 6: Final answer
    x = 29,864.93

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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.