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Finding the Fourth Proportional to 78,316.66, 108,027.82 and 46,463

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Solution

The fourth proportional to 78,316.66, 108,027.82 and 46,463 is: 64,089.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,316.66 : 108,027.82 = 46,463 : x
  2. Step 2: Convert to fraction form
    78,316.66/108,027.82 = 46,463/x
  3. Step 3: Cross multiply
    78,316.66x = 108,027.82 × 46,463
  4. Step 4: Simplify right side
    78,316.66x = 5,019,296,600.66
  5. Step 5: Solve for x
    x = 5,019,296,600.66/78,316.66
  6. Step 6: Final answer
    x = 64,089.77

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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.