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Finding the Fourth Proportional to 78,133.33, 107,824.13 and 42,323.64

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Solution

The fourth proportional to 78,133.33, 107,824.13 and 42,323.64 is: 58,406.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,133.33 : 107,824.13 = 42,323.64 : x
  2. Step 2: Convert to fraction form
    78,133.33/107,824.13 = 42,323.64/x
  3. Step 3: Cross multiply
    78,133.33x = 107,824.13 × 42,323.64
  4. Step 4: Simplify right side
    78,133.33x = 4,563,508,910.69
  5. Step 5: Solve for x
    x = 4,563,508,910.69/78,133.33
  6. Step 6: Final answer
    x = 58,406.69

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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.