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Finding the Fourth Proportional to 101,656.05, 140,289.81 and 56,333.93

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Solution

The fourth proportional to 101,656.05, 140,289.81 and 56,333.93 is: 77,743.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,656.05 : 140,289.81 = 56,333.93 : x
  2. Step 2: Convert to fraction form
    101,656.05/140,289.81 = 56,333.93/x
  3. Step 3: Cross multiply
    101,656.05x = 140,289.81 × 56,333.93
  4. Step 4: Simplify right side
    101,656.05x = 7,903,076,336.25
  5. Step 5: Solve for x
    x = 7,903,076,336.25/101,656.05
  6. Step 6: Final answer
    x = 77,743.30

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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.