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Finding the Fourth Proportional to 77,974.92, 107,606.34 and 43,980.30

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Solution

The fourth proportional to 77,974.92, 107,606.34 and 43,980.30 is: 60,693.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,974.92 : 107,606.34 = 43,980.30 : x
  2. Step 2: Convert to fraction form
    77,974.92/107,606.34 = 43,980.30/x
  3. Step 3: Cross multiply
    77,974.92x = 107,606.34 × 43,980.30
  4. Step 4: Simplify right side
    77,974.92x = 4,732,559,115.10
  5. Step 5: Solve for x
    x = 4,732,559,115.10/77,974.92
  6. Step 6: Final answer
    x = 60,693.35

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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.