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Finding the Fourth Proportional to 101,743.60, 140,407.80 and 56,423.44

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Solution

The fourth proportional to 101,743.60, 140,407.80 and 56,423.44 is: 77,865.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,743.60 : 140,407.80 = 56,423.44 : x
  2. Step 2: Convert to fraction form
    101,743.60/140,407.80 = 56,423.44/x
  3. Step 3: Cross multiply
    101,743.60x = 140,407.80 × 56,423.44
  4. Step 4: Simplify right side
    101,743.60x = 7,922,291,078.83
  5. Step 5: Solve for x
    x = 7,922,291,078.83/101,743.60
  6. Step 6: Final answer
    x = 77,865.25

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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.