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Finding the Fourth Proportional to 79,097.34, 118,644.63 and 19,931.70

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Solution

The fourth proportional to 79,097.34, 118,644.63 and 19,931.70 is: 29,897.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,097.34 : 118,644.63 = 19,931.70 : x
  2. Step 2: Convert to fraction form
    79,097.34/118,644.63 = 19,931.70/x
  3. Step 3: Cross multiply
    79,097.34x = 118,644.63 × 19,931.70
  4. Step 4: Simplify right side
    79,097.34x = 2,364,789,171.77
  5. Step 5: Solve for x
    x = 2,364,789,171.77/79,097.34
  6. Step 6: Final answer
    x = 29,897.20

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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.