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Finding the Fourth Proportional to 77,703.40, 107,229.54 and 43,709.32

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Solution

The fourth proportional to 77,703.40, 107,229.54 and 43,709.32 is: 60,318.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,703.40 : 107,229.54 = 43,709.32 : x
  2. Step 2: Convert to fraction form
    77,703.40/107,229.54 = 43,709.32/x
  3. Step 3: Cross multiply
    77,703.40x = 107,229.54 × 43,709.32
  4. Step 4: Simplify right side
    77,703.40x = 4,686,930,277.31
  5. Step 5: Solve for x
    x = 4,686,930,277.31/77,703.40
  6. Step 6: Final answer
    x = 60,318.21

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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.