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Finding the Fourth Proportional to 78,379.77, 108,090.41 and 60,446.37

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Solution

The fourth proportional to 78,379.77, 108,090.41 and 60,446.37 is: 83,359.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,379.77 : 108,090.41 = 60,446.37 : x
  2. Step 2: Convert to fraction form
    78,379.77/108,090.41 = 60,446.37/x
  3. Step 3: Cross multiply
    78,379.77x = 108,090.41 × 60,446.37
  4. Step 4: Simplify right side
    78,379.77x = 6,533,672,614.08
  5. Step 5: Solve for x
    x = 6,533,672,614.08/78,379.77
  6. Step 6: Final answer
    x = 83,359.17

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1.5x scale

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.