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Finding the Fourth Proportional to 72,783.69, 109,060.11 and 56,184.36

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Solution

The fourth proportional to 72,783.69, 109,060.11 and 56,184.36 is: 84,187.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,783.69 : 109,060.11 = 56,184.36 : x
  2. Step 2: Convert to fraction form
    72,783.69/109,060.11 = 56,184.36/x
  3. Step 3: Cross multiply
    72,783.69x = 109,060.11 × 56,184.36
  4. Step 4: Simplify right side
    72,783.69x = 6,127,472,481.88
  5. Step 5: Solve for x
    x = 6,127,472,481.88/72,783.69
  6. Step 6: Final answer
    x = 84,187.44

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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.