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Finding the Fourth Proportional to 56,388.78, 84,349.41 and 42,960.17

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Solution

The fourth proportional to 56,388.78, 84,349.41 and 42,960.17 is: 64,262.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,388.78 : 84,349.41 = 42,960.17 : x
  2. Step 2: Convert to fraction form
    56,388.78/84,349.41 = 42,960.17/x
  3. Step 3: Cross multiply
    56,388.78x = 84,349.41 × 42,960.17
  4. Step 4: Simplify right side
    56,388.78x = 3,623,664,993.00
  5. Step 5: Solve for x
    x = 3,623,664,993.00/56,388.78
  6. Step 6: Final answer
    x = 64,262.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.