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Finding the Fourth Proportional to 72,967.61, 100,683.72 and 41,130.36

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Solution

The fourth proportional to 72,967.61, 100,683.72 and 41,130.36 is: 56,753.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,967.61 : 100,683.72 = 41,130.36 : x
  2. Step 2: Convert to fraction form
    72,967.61/100,683.72 = 41,130.36/x
  3. Step 3: Cross multiply
    72,967.61x = 100,683.72 × 41,130.36
  4. Step 4: Simplify right side
    72,967.61x = 4,141,157,649.74
  5. Step 5: Solve for x
    x = 4,141,157,649.74/72,967.61
  6. Step 6: Final answer
    x = 56,753.37

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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.