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Finding the Fourth Proportional to 72,102.32, 99,500.63 and 41,905.32

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Solution

The fourth proportional to 72,102.32, 99,500.63 and 41,905.32 is: 57,829.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,102.32 : 99,500.63 = 41,905.32 : x
  2. Step 2: Convert to fraction form
    72,102.32/99,500.63 = 41,905.32/x
  3. Step 3: Cross multiply
    72,102.32x = 99,500.63 × 41,905.32
  4. Step 4: Simplify right side
    72,102.32x = 4,169,605,347.61
  5. Step 5: Solve for x
    x = 4,169,605,347.61/72,102.32
  6. Step 6: Final answer
    x = 57,829.01

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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.