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Finding the Fourth Proportional to 101,672.93, 140,308.65 and 56,353.83

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Solution

The fourth proportional to 101,672.93, 140,308.65 and 56,353.83 is: 77,768.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,672.93 : 140,308.65 = 56,353.83 : x
  2. Step 2: Convert to fraction form
    101,672.93/140,308.65 = 56,353.83/x
  3. Step 3: Cross multiply
    101,672.93x = 140,308.65 × 56,353.83
  4. Step 4: Simplify right side
    101,672.93x = 7,906,929,809.63
  5. Step 5: Solve for x
    x = 7,906,929,809.63/101,672.93
  6. Step 6: Final answer
    x = 77,768.29

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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.