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Finding the Fourth Proportional to 101,572.02, 140,169.78 and 56,249.01

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Solution

The fourth proportional to 101,572.02, 140,169.78 and 56,249.01 is: 77,623.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,572.02 : 140,169.78 = 56,249.01 : x
  2. Step 2: Convert to fraction form
    101,572.02/140,169.78 = 56,249.01/x
  3. Step 3: Cross multiply
    101,572.02x = 140,169.78 × 56,249.01
  4. Step 4: Simplify right side
    101,572.02x = 7,884,411,356.92
  5. Step 5: Solve for x
    x = 7,884,411,356.92/101,572.02
  6. Step 6: Final answer
    x = 77,623.85

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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.