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Finding the Fourth Proportional to 101,495.79, 140,062.25 and 56,173.79

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Solution

The fourth proportional to 101,495.79, 140,062.25 and 56,173.79 is: 77,518.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,495.79 : 140,062.25 = 56,173.79 : x
  2. Step 2: Convert to fraction form
    101,495.79/140,062.25 = 56,173.79/x
  3. Step 3: Cross multiply
    101,495.79x = 140,062.25 × 56,173.79
  4. Step 4: Simplify right side
    101,495.79x = 7,867,827,909.02
  5. Step 5: Solve for x
    x = 7,867,827,909.02/101,495.79
  6. Step 6: Final answer
    x = 77,518.76

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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.