Home / 72,869.41-100,557.13-40,602.36

Finding the Fourth Proportional to 72,869.41, 100,557.13 and 40,602.36

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Solution

The fourth proportional to 72,869.41, 100,557.13 and 40,602.36 is: 56,029.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,869.41 : 100,557.13 = 40,602.36 : x
  2. Step 2: Convert to fraction form
    72,869.41/100,557.13 = 40,602.36/x
  3. Step 3: Cross multiply
    72,869.41x = 100,557.13 × 40,602.36
  4. Step 4: Simplify right side
    72,869.41x = 4,082,856,918.82
  5. Step 5: Solve for x
    x = 4,082,856,918.82/72,869.41
  6. Step 6: Final answer
    x = 56,029.78

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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.