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Finding the Fourth Proportional to 78,463.72, 108,279.06 and 58,410.28

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Solution

The fourth proportional to 78,463.72, 108,279.06 and 58,410.28 is: 80,605.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,463.72 : 108,279.06 = 58,410.28 : x
  2. Step 2: Convert to fraction form
    78,463.72/108,279.06 = 58,410.28/x
  3. Step 3: Cross multiply
    78,463.72x = 108,279.06 × 58,410.28
  4. Step 4: Simplify right side
    78,463.72x = 6,324,610,212.74
  5. Step 5: Solve for x
    x = 6,324,610,212.74/78,463.72
  6. Step 6: Final answer
    x = 80,605.54

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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.