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Finding the Fourth Proportional to 101,548.50, 140,136.93 and 56,836.50

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Solution

The fourth proportional to 101,548.50, 140,136.93 and 56,836.50 is: 78,434.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,548.50 : 140,136.93 = 56,836.50 : x
  2. Step 2: Convert to fraction form
    101,548.50/140,136.93 = 56,836.50/x
  3. Step 3: Cross multiply
    101,548.50x = 140,136.93 × 56,836.50
  4. Step 4: Simplify right side
    101,548.50x = 7,964,892,621.95
  5. Step 5: Solve for x
    x = 7,964,892,621.95/101,548.50
  6. Step 6: Final answer
    x = 78,434.37

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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.